160 Best Birthday Wishes For Sister-in-Law – Happy Birthday Sister-in-Law

Birthday Wishes For Sister-in-Law: If you’re looking for creative ways to wish your sister-in-law a happy birthday, this article should be able to assist you. Here are some of the greatest birthday wishes for my sister-in-law, whether you’re looking for something sweet, formal, or humorous. A kind gesture like wishing your sister-in-law a happy birthday may strengthen your bond with her and her family. Do you realize that your romantic relationship with your spouse is greatly impacted by this relationship? According to one study, couples’ chances of divorce are reduced by 20% if one or both spouses have deep bonds with their in-law families.

Happy Birthday Sister-in-Law – It’s not easy to choose the best approach to congratulate your sister-in-law on her birthday. Because of this, the birthday quotes from your sister-in-law may motivate you. Because the lists cover all of your demands, you may compose the notes in a variety of ways—sweet, emotional, or hilarious. Choosing the proper birthday wishes for your sister-in-law might be a challenge. To help you come up with the perfect birthday card message, here are a few ideas:

1. “My sister is my hero.” Patrick J. Adams

2. At first, I thought I would end up hating you, but now, I realize I have ended up loving you more than I ever thought possible. You are an amazing woman, and I can see why my brother picked you as his wife. Happy birthday to a remarkable woman: my sister-in-law!

3. Sister-in-Law, I would hope that on your special day you are surrounded by love. But there really is no need to hope, because I will be there, so it’s a given. I love you, not just because you are family, but because you are a remarkable person who I am glad to call my friend.

4. I have a special treat for your big day, Sister-in-Law: I have gathered all the most embarrassing photos of my brother that I could find, and they are all yours for future ammunition for when he is bound to annoy you. You are very welcome!

5. Whenever your birthday rolls around it fills me with joy and delight to know that someone so wonderful and caring is part of my family. I am sending lots of warm and loving thoughts your way today. Happy birthday Sister-in-Law!

Birthday Wishes For Sister-in-Law

6. I’m touched by how open, honest, and loving you are. The day you married into my family I gained more than an in-law, I gained a friend. Happy birthday to my amazing sister-in-law!

7. When I was a kid, I always complained about the fact that I didn’t get to have a sister. But now that you are a part of my family, I have found the sister I always wanted in you. Thank you.

8. If you drop the in-law part of sister-in-law, then you will have what I really consider you to be: a sister. I am so grateful that I am blessed with another sister in my life, and I hope you can consider me to be your sister as well. May your special day be full of luck, laughter, and love.

9. Sister-in-Law, I don’t know who loves you more my brother, my kids, or me. It’s a tough competition, but I like to think that I’m winning! Happy birthday to my loved sister-in-law!

10. I couldn’t have asked for a better sister-in-law, because you are calm, cool, and captivating. How my brother managed to trick you into marrying him is still a mystery to me, but I am glad you fell for whatever it was! Happy birthday to my remarkable sister-in-law!

11. I am surprised and beyond pleased with how we have become such good friends throughout the years. Thank you for all the great moments we have had so far, and I look forward to having many more with you in the future. Happy birthday Sister-in-Law!

12. My brother is so lucky to have you as a wife. I pray each day that I will be as lucky to marry a woman just like you. You are a great blessing to our family. Have a fun-filled birthday.

13. Sister-in-Law, if life were a cookie, you would be the chocolate chips, because you make everything better with your sweet, adorable, and loving nature. Happy birthday!

14. When I married my wife, I had no clue that I was gaining a sister as well. But nothing has given me more joy than having you in my life. If you ever need an older brother to help adore and support you, just call on me, and I will be there. Happy birthday Sister-in-Law!

15. Happy birthday, one of the most spectacular person! You’re loyal and a pure hearted person. You’ve overcome many difficulties with your courage and intelligence. Surely, you’re an example for the womanhood. I’m really proud to have you as my sister-in-law. May you have many years of happy and healthy life!

16. I am and always will be immeasurably grateful for your coming into our lives, dear Sister-in-Law. You have brought us happiness and content beyond measure. For that, I wish and hope that the coming year is filled with love and joy for you! Happy birthday!

17. Your dedication, determination, and daring inspire me to aim higher, be bolder, and love stronger. I am blessed to have you as a role model, not just for me, but for my daughters as well. Happy birthday from your awe-inspired sister-in-law!

18. My sister-in-law cum friend, happy birthday! There’s no doubt that you’re the best sister-in-law of the whole world. You have enlightened our lives with your entrance in this house. You surely know some magic to keep everyone happy and it’s the magic of love. Wish you to have all the best things in your life!

19. For all the times I needed a sister to wipe away my tears or share in my laughter you were there for those moments. Thank you, and I hope that you are smothered in love, kisses, and adoration on your big day. Happy birthday Sister-in-Law!

20. As my sister-in-law, you have only ever shown me warmth, and I am always moved by your incredible capacity for kindness and love. I sure lucked out when you married into my family, and I am all the better for having you in my life. Happy birthday Sister-in-Law!

21. A miracle has happened: I agree with my brother for once! He thinks you are perfect, amazing, and glorious, and I happen to concur. Now if only I could get him to agree to the fact that I am also all those things! Oh well. Happy birthday to my incredible sister-in-law!

22. Sister-in-Law, from one mom to another: I’m impressed. You manage to get everything done and look fabulous while doing it. Please tell me your secret! May your birthday be as perfect as you are. Happy birthday to my impeccable sister-in-law!

23. If I could have picked out the perfect sister-in-law, it would have been you! Thank you for being who you are. I love having you as a “sister.” I hope you have a phenomenal birthday and look forward to seeing you soon.

24. Now that I have a splendid sister-in-law like you, my brother doesn’t have to worry about spoiling me. You have taken over that job, and I must say you are doing it phenomenally. Thank you for showering me with your love, and I hope that you feel just as loved on your big day.

25. I like your annoying behavior, I enjoy your silly tantrums and I get amused by your crazy antics – all because you are my cute sister-in-law. Happy birthday.

26. “To have a loving relationship with a sister is not simply to have a buddy or a confident…it is to have a soul mate for life.” Victoria Secunda

27. On this amazing day I wanted to wish you an even more amazing birthday! I hope you get what you wanted and I believe that you will achieve all your goals!

28. I hope your every wish comes true this year for your birthday. I know it’s possible, because when I was a kid I always wished I had a sister, and now I have you in my life. Happy birthday Sister-in-Law!

29. I love having you as a sister-in-law. I couldn’t ask for a better person to share all my troubles, hopes, and dreams with. You have a kind nature, a beautiful soul, and a loving spirit. May you feel just as loved and cherished on your birthday as I do by you in life.

30. Sister-in-Law, you remind me a lot of Sandra Bullock: you’re pretty, you’re smart, and you’re “Miss Congeniality.” Also, you never seem to age. How do you do it? No, really. How? Please feel free to share both your cake and your beauty tips with your adoring sister-in-law.

31. How thrilled I am to have a sister-in-law as warm, dependable, and caring as you. Today and every day, you deserve the best. Happy birthday.

32. Sister-in-Law, we may have had a rocky start to our relationship, but what counts is that we got there in the end! Now, there is no one else I would rather turn to for friendship and advice than you. I hope that you have an incredible birthday that is as lovely as you are.

33. Having you as a sister-in-law has made me a stronger person because your faith in me gives me strength. Your support means the world to me, and I hope that your birthday is full of happy surprises, yummy food, and so much love that you are overwhelmed by it.

34. I can’t really explain what you have added to our family. It’s a certain wonderful that only someone like you could give. We are grateful to have you in our lives and love you dearly. Happy Birthday, Sister-in-Law.

35. Wishing a happy birthday to my beautiful sister-in-law. You’re such a caring, kind, and loving person, and I’m so grateful to know you.

36. Sister-in-Law, I have no idea how I would have made it this far in life without all your help over the years. Your kind nature is just one of the many things I love about you. May you receive back ten-fold all the love and support you have doled out in your lifetime

37. “Sister we don’t know what the future holds but we always know we are there for each other.” Catherine Pulsifer

38. Here’s wishing you lots of health, wealth, and love for your big day. Health so that we can have many years of get-togethers, wealth so we can shop a lot, and love because you are a wonderful person who deserves unlimited love.

39. Sister-in-Law, you are someone that I can talk to, someone I can lean on, and someone that understands me. You are much more than just my brother’s wife, you are my friend. Happy Birthday.

40. I’m very fortunate because good friends are often hard to come by, but you just fell into my life when you married my brother. I want you to know that I feel privileged to be your friend, and I hope that your birthday is exciting, joyous, and very special.

41. Sister-in-Law, I just wanted to take today to thank you for fulfilling a dream I have had since childhood: having a sister. I am so happy that we are close, and I hope we always stay that way.

42. Do you know what’s funny? When I think of my brother, I tend to laugh, and when I think of you, I tend to smile. You guys really are perfect together. You are a wonderful addition to our family, and I hope that your special day is as lively and fun as you are.

43. The birds are singing and the sun is shining and so is your smile on your pretty face, Happy birthday to my sweet and lovely sister-in-law!

44. Sister-in-Law, we disagree on almost everything, but there is one thing that we can agree on: that you are a spectacular sister-in-law who I am blessed to have as a part of my family. May your day be delightful and your life full of love. Happy birthday!

45. You are the most beautiful addition and the happiest blessing to our family. I am so lucky to have you in our family. Happy Birthday to you dear sister-in-law.

46. We may have only known each other for a short while, but in that time, I have learned so much from you. You are always eager to lend a helping hand, and your kindness, compassion, and love always make me so very grateful that I get to call you my friend.

47. When my older brother married you, I was worried he wouldn’t have time for me anymore. But I couldn’t have been more wrong. In fact, we are closer than ever, and instead of losing my brother, I have gained a new friend. Thank you, and happy birthday Sister-in-Law!

48. Some people aren’t fond of their in-laws, and I can’t help but feel sad for those people. They weren’t fortunate enough to have an amazing sister-in-law like you in their lives. Thank you for enriching my life with your compassionate and loving ways.

49. I’m glad that you have become my sister-in-law because now Mom and Dad can harass you for grandbabies instead of me! You have my heartfelt gratitude and love. Happy birthday!

50. “You don’t love someone because they’re perfect, you love them in spite of the fact that they’re not.” Jodi Picoult

Happy Birthday Sister-in-Law

51. You are such an unselfish, compassionate, and loving person, Sister-in-Law. Honestly, I’m not sure how my brother landed such a catch! But I am glad he did because it enabled us to become such good friends. May your birthday be full of many amazing memories.

52. “Unconditional love; the definition of sister.” Alicia Cook

53. Happy birthday to the woman that I cherish like a little sister: my adorable sister-in-law. I see now that intelligence, cuteness, and prettiness run in the family, and I am so happy that not only do I have an amazing wife, but an amazing sister-in-law as well.

54. Wishing you great health so we can have more afternoon teas together; more wealth so you can shop for that shoes you have been eyeing for this past few weeks; more love because you deserve it; and more blessings in your life, simply because you are such a wonderful person. Happy birthday, sis in law!

55. My husband is often jealous of our relationship because he thinks you love me more than him. I always tell him that’s not true, but between us, we both know that I’m the better sibling! No need to let him know that though. May you have a truly extraordinary birthday this year.

56. “She is your mirror, shining back at you with a world of possibilities. She is your witness, who sees you at your worst and best, and loves you anyway.” Barbara Alpert

57. I am so ecstatic that you have become a member of my family. May your birthday bring to you all the wonderful things that you have ever wished for in life. Happy birthday!

58. I’ve always criticized my baby brother’s choice in women, but when he met you, I was elated. I knew right away you were an extraordinary person, and I am so glad that he somehow tricked you into marrying him! I hope your birthday is as joyous and sweet as you are.

59. You’ve improved my brother’s life with your love and devotion. Personally, as his big brother, I feel that he doesn’t deserve you. Now, if I could just find a wife half as wonderful as you, I’d be set. If only you had a sister. Happy birthday from your very jealous brother-in-law!

60. Sister-in-Law, my brother and I have always been so close, and I will admit I was anxious when he married you. But I want to thank you for never being jealous of our closeness, and for always encouraging us to stay that way. Happy birthday to the glue that holds this family together!

61. Sister-in-Law, if you are ever feeling troubled, please know that I will always be there for you. I consider you to be my real sister, and I will always support you no matter the circumstance (and I know that you would do the same for me as well). Happy birthday, Sis!

62. Congratulations dear sister-in-law for successfully completing another year of life! I’m so happy to be able to celebrate your birthday. May you always remain surrounded by your family, friends and loved one in all the situations!

63. You are an incredibly lucky woman, Sister-in-Law. You have a terrific husband, awesome kids, and me for a sister-in-law. But no one is luckier than I am because I get to have you as my best friend. Happy birthday!

64. Sister-in-Law, you are always so generous with your time, your affection, and your love. Thank you for always sharing and giving even when there were times when I was unworthy. I consider you more than an in-law; I consider you my sister. Happy birthday, Sis!

65. On your birthday, I just want to say thanks to you for giving us so many reasons to smile. Happy Birthday dear.

66. Sister-in-Law, you may be your parent’s beloved daughter, my brother’s treasured wife, but you are also my best friend. Thank you for bringing so much joy and happiness into all our lives. May your birthday be meaningful and bright. Happy birthday!

67. Thank you for always making me feel like I’ve got a handle on life, even when I really don’t. Your support is appreciated, and your love is reciprocated. Happy birthday!

68. I was so worried about how you would impact my brother’s life that I was blind to how you would impact my own life. You have made such a deep and meaningful impression on both of us, and I am fortunate beyond belief to be related to such a remarkable woman.

69. You never fail in being kind, steadfast, and loving. This is just one of the countless reasons I love you so much, Sister-in-Law. I’m sending hearts, hugs, and kisses your way today.

70. I have a lot of in-laws but the only in-law I can go to for genuine advice and love is you. Happy birthday to my beautiful sister-in-law.

71. “Sisters share the scent and smells – the feel of a common childhood.” Pam Brown

72. I am so glad that my husband has such a phenomenal sister. When I first married him, I looked forward to romantic dates with him, but now I also get to look forward to coffee dates with you! Thank you for always treating me like a sister and a friend. Happy birthday!

73. Today is one of the most beautiful days because it’s your birthday, sister-in-law. Happy birthday! You’ve taught me many things of life and loved and cared for me like your sister. I am really grateful to you. Love you.

74. Sister-in-Law, you are so perfect that I am convinced that my brother must have bribed you to marry him! It’s a good thing he did though because you have brightened my life with your exceptional love and devotion. Thank you, and happy birthday!

75. Sister-in-Law, there are several things that I want to take the time to thank you for: for always letting me confide in you like a real sister, for comforting me when life wasn’t going my way, and for loving me as much as you love my brother. I am eternally grateful to have you in my life.

76. Happy birthday to my sister-in-law who I truly adore! Now that we are sisters you will never need another birthday present, because what could ever top being related to me?

77. I want to thank you for always acting like an older sister to me, and for taking the time guide me every step of the way in life. I’m so appreciative, and I sincerely hope that you have a spectacular birthday this year. Happy birthday, Sis!

78. When I hear people talking trash about their in-laws, it only makes me more grateful that I have a kind, charming, and engaging sister-in-law. Thank goodness I lucked out in that department! I hope you have a stress-free, sensational, and superb birthday.

79. The day my baby brother married you was the day I decided to forgive him for a lifetime of being annoying. Thanks for loving him as much as I do, and for being an amazing person.

80. “A loyal sister is worth a thousand friends.” Marian Eigerman

81. Today is more than a celebration of when you were born. It is a celebration of the wonderful life you have lived so far. May you continue to have bright and happy days.

82. Thank you for making our family stronger by being in it. You are a loving wife and an amazing friend. I am so blessed to have such a genuine and sweet person as a sister-in-law.

83. Sister-in-Law, we had some rough times at the beginning of our relationship, but now there is no one I would rather have as a friend than you. We probably needed some time to figure out how good we are together because we are so much alike!

84. I’m so glad you’re my sister-in-law. I hope that your birthday brings you everything you could want and more! Happy Birthday!

85. You have been such a sweet and wonderful sister-in-law, so today I wanted to tell you thank you. I am glad you were born, and that you came into my life and filled it with light and love.

86. May your birthday be wonderful, your year prosperous, and your life successful. If anyone is deserving of this, it is you. Your determination, fortitude, and strength of character are unrivaled, and I am truly blessed to be a part of your life.

87. Sister-in-law, I like you so much that my husband often wonders whether you are more of a sister to him or me. I think he’s just jealous that clearly you like me more! May your special day be full of abundant love and happiness.

88. Sisters are Forever! You are not just my sister-in-law; you have become my sister right from the day you said ‘I do’ to my brother. You are my sister forever! Happy birthday.

89. Sister-in-Law, I never believed in luck until I met my wife and she turned out to be perfect. And then, to top it off, she had a perfect sister too! How did I luck out this much? Happy birthday from a converted believer! Bring on the leprechauns and rabbit’s feet.

90. Thanks for providing me with one of the greatest gifts I have ever been given: nieces and nephews. They bring me just as much joy as you do. Happy birthday to my beloved sister-in-law!

91. Thank goodness my brother married you, because now I finally stand a chance of receiving decent presents for Christmas and birthdays! He normally is the worst, but now he has you to turn to, and no one gives better advice than you do. Happy birthday Sister-in-Law!

92. I wish you fortune, treasure, and wealth this year for your big day, Sister-in-Law. You may have noticed a common theme with this wish, but I promise that it’s for a good reason. I really, really need you to buy my brother some common sense this year! Just kidding, and happy birthday!

93. There are only a few persons in this world who are very close to my heart. Dear sister-in-law, you are one of them. Your love and support prove that God has given you a big heart. Happy birthday! I pray to God to make you my sister in the next life.

94. There are so many things to admire about you, but your grit and determination are some of my favorites. Happy birthday to a woman I love as much as I admire: my sister-in-law!

95. Happy birthday, to a sister-in-law who charms everyone she meets. We’re all so lucky to have you as part of the family. You’re simply a treasure.

96. There might be times when we argue and fight, but there are just as many times that we comfort and support one another. That’s what real “sisters” do. Happy birthday, Sis!

97. Wishing all the best the world has to offer on my sister-in-law’s important day! I love you and am glad to know you. Happy birthday.

98. When you married my brother, you went out of your way to try and forge a friendship with me. I am so thankful for that, and I want you to know that I appreciate and love you so much. Happy birthday to my sister-in-law who is as much a friend as she is family!

99. To my sister-in-law on your birthday: Someone as extraordinary as you deserves all the magic a day can bring. Happy birthday!

100. If I had the chance to choose a sister-in-law I would choose no other than you! Special Birthday Wishes for my very special sister-in-law!

101. My dearest sister-in-law, happy birthday! I hope every moment of your life be filled with joy and you win every challenge of your life. You are always in my prayers. Wish you to have a magical birthday!

102. When I was younger, I was glad that I only had brothers, but now that I am married to your sister, I am grateful that I now have a sister to love and dote on as well. I could never have imagined how wonderful it would be to have you in my life. Happy birthday, Sis!

103. Happy birthday to a woman who deserves to have her every command followed and every desire fulfilled: my sister-in-law. For all the years you had to put up with my husband during his childhood, you deserve this and so much more! May all your wishes come true this year.

104. Now that you are my sister-in-law, I get to look forward to all the crazy times we will have in the future. Just so you know, I would prefer crazy times in Vegas over crazy times during family dinners! Just saying. Here’s to a lifetime of crazy strong sisterhood and love!

105. Sisters-in-law are known to have a bitter-sweet and a love-hate relationship with their in-laws. But I have a sweet-sweet and love-love relationship with you. Happy birthday.

106. There is no greater compliment that I can give other than to say that when my daughter grows up, I hope that she takes after you: strong, vivacious, intelligent, caring, and full of love. Happy birthday to the woman I am proud to call a part of my family: my sister-in-law!

107. At first, I was intimidated by how fabulous and amazing you are. But then I became grateful because you passed on so much wisdom and love to me. Thank you for always being kind and treating me well. My brother is so lucky that he has you as a wife. Happy birthday Sister-in-Law!

108. Thank you for giving me something that my parents never did: a sister. You mean so much to me and are an invaluable part of my life. May your birthday magical and bright.

109. Thank goodness you married my brother, because now you can take over the job of spoiling your nieces and nephews. He does a great job, but I know that you are going to be even better at it because I’ve experienced being spoiled rotten by you first-hand!

110. Sister-in-Law, I was trying to think of the perfect gift to give you for your birthday, but then I realized that you already have the best gift: me as your brother-in-law. I couldn’t possibly top that, so I went for chocolate cake instead!

111. Over the years you have given me so many reasons to smile, and I hope that on your birthday you never stop smiling. You bring warmth, happiness, and joy to everyone around you.

112. When my brother brought home his bride, who knew that she would become the family’s pride? Happy birthday to my sister-in-law who we are all very proud of.

113. There’s not a day that passes by that I’m not thankful you came into my life. You’ve brought peace and love, not just to my brother, but to me as well. May your birthday be just as memorable and loving as you are.

114. “Sisters don’t need words. They have perfected a language of snarls and smiles and frowns and winks – expressions of shocked surprise and incredulity and disbelief.” Pam Brown

115. Sister-in-Law, family gatherings are way more exciting now that you are here. You are an absolute pleasure to be around, and I am so lucky that I get to spend time with such a sassy, smart, and spontaneous woman. Happy birthday to my spectacular sister-in-law!

116. One of the most fabulous surprises that life has given me is you, my dear sister-in-law! Congratulations on your day, may it be fantastic!

117. I love you more just as much as Queen Elizabeth II loved to wear a hat. I love you more than my brother loves you. So, accept my heartiest wish on your birthday dear sister-in-law and do invite me to eat the cake.

118. Since you have become a part of our family, you have brought only happiness and wonder into our hearts, because you are such a dependable, remarkable, and lovable person.

119. When my brother first met you, he always had this big, goofy smile on his face, and I was concerned about his mental state. But after I met you, I realized that this is just a natural reaction to how awesome a person you are. You should come with a warning that says: “may cause goofy smiles and spontaneous hugs.”

120. I know our family may be loud and crazy, but at least we are crazy about you, Sister-in-Law! We are blessed to have you in our lives and hope that all your dreams come true in life.

121. I always wondered how my husband came by his genuine, loving, and respectful ways, and now I know: he grew up with an amazing older sister who taught him to treat women with respect. Thank you, and happy birthday!

122. I’m so happy that you married into our family. Not only did I gain a sister, but an ally as well. Thank you for being on my side, pointing out my good attributes, and always making sure my brother buys me nice presents. You’re the best, and I hope you have a delightful birthday.

123. Not just a sister in law, I always consider you as my sister. On your birthday, I would like to pray to GOD that you stay happy forever. A very happy birthday to you, May you celebrate this day with feelings that are cheerful and new.

124. Always keep in mind that when you married my younger brother, you gained a big brother as well as a husband. So, if anyone ever bothers you or hurts your feelings just let me know. It will always take care of it for you. Happy birthday to my cherished sister-in-law!

125. Sister-in-law, since it’s your first birthday as part of our family, I thought I would share some family birthday traditions that we have: we drink a lot, we give cheap gifts, and we always give all the left-over cake to me. What? I swear these are legit birthday family traditions! Maybe.

126. I’ve longed for the perfect timing to tell you how much your humility to my brother has inspired me to become a humble wife to my husband. Thank you for being an exemplary sister-in-law. Happy birthday.

127. My brother is known for many things but making stellar choices is not one of those things! Which is why I was flabbergasted when he picked such an exceptional person to spend the rest of his life with. This just cements my belief in dumb luck!

128. Sister-in-Law, if you ever need someone to confide in, please turn to me. Especially if it concerns my brother, because I need all the dirt I can get on him! Just kidding. But know that I will always support and love you as if you were my biological sister.

129. To my sister-in-law: I hope your birthday is filled with all the best the world has to offer. May all of your dreams come true, today and always.

130. Sister-in-Law, I have a confession. Sometimes, I fake being upset or sick so that you will pamper me with your love. I know it’s wrong, but I can’t help myself. You are so amazing, so who wouldn’t want to spend time with you?

131. “Sweet is the voice of a sister in the season of sorrow.” Benjamin Disraeli

132. Sister-in-Law, I know that I can always rely on you. No matter the issue, you are a constant source of help and support. Thank you for being such an understanding and generous person, and I pray that your birthday is as warm, bright, and wondrous as you are a person.

133. Sister-in-Law, we may have opposing opinions on a lot of things, but there is one opinion that we both share: you are an incredible person who is a vital part of this family. May you feel sheltered, loved, and adored on your big day.

134. You. You are the best sister-in-law! Happy birthday, I hope it’s amazing!

135. Sister-in-Law, you have done the impossible. No, not just keeping my brother in line (although good job on that miracle), but you have managed to make family get-togethers tolerable! Your quick wit, charming grace, and adorable demeanor always brighten up our family functions.

136. Thank you for always loving and taking care of my brother (you deserve a medal for that by the way), and for always doing the same for me as well (probably much easier to do). You are unbelievably kind and generous, and we are both lucky that you are a part of our family.

137. Since I have such a large family, I have no shortage of in-laws. But the one in-law that I can always turn to for advice, support, and love is you. I am so glad that you are a part of my life, and I hope that your big day is full of cheerful people, cool presents, and chocolate cake.

138. Sister-in-Law, even though you are way out of my brother’s league, I am grateful you married him, because otherwise, I would have missed out on having such an amazing and invaluable friend. Thank you, and happy birthday!

139. I’m beyond lucky because not only do I have an amazing friend in my life, but I also get to have that friend as my sister-in-law. Win-win. May your birthday be as warm and bright as you are.

140. “I’ve known every love possible, but as the years stretched out, the love I longed for the most is the one I shared with my sister.” Josephine Angelini

141. May your special day be full of astounding discoveries, magical moments, and lovely surprises. You deserve all these things and more. Happy birthday to an incredible woman: my sister-in-law.

142. Having an amazing sister-in-law is much more important than having amazing friends. Mainly because during the holidays you can choose not to spend time with your friends, but family not so much! I’m grateful that I get to spend my holidays with you and I wish you a happy birthday!

143. I was so worried when my big brother married you because I thought that you would take my place in his heart. But now I realize how foolish I was because you have only made his heart bigger with your love. Thanks for always including me and making me feel doubly loved.

144. After I met you I realized something: my wife must have learned her tenacity, strength, and charm from her older sister! Thank you for being a spectacular sister to both of us.

145. Wishing the happiest of birthdays to one of the greatest people I know. Never stop being the cheery, wonderful, strong and brave woman we all have grown to know, respect and love! Happy birthday! Here’s to you, an incredible sister-in-law.

146. “Sisters are best friends, they are advisors, they are teachers, and best of all they are people with whom you can talk with about anything – someone you have a special bond with!” Catherine Pulsifer

147. I like to treat you just like a real sister: I annoy you, I admire you, and I love you. I am fortunate to have such a deeply loving person in my life, and I hope you have a great birthday.

148. Your birthday is an incredibly important day, Sister-in-Law. It’s a day to reflect on how wonderful it is that you were born because, without you, our lives wouldn’t be nearly as happy and wondrous as they are now. We are so lucky to have you as part of our family.

149. I will always cherish and adore you, Sister-in-Law. You are the sister I never had growing up, and I am truly delighted that you have always made every effort to connect with me. May your special day be full of priceless moments and loving people. Happy birthday!

150. My brother is the luckiest guy on the planet because he somehow found a woman who not only puts up with his crazy but is crazy in love with him as well. I am overjoyed at having you as an in-law, and I wish you all the happiness and joy possible on your big day.

151. I hope you know that it’s never too late to become who you want to be in life. You have unlimited potential, and I know that you can do anything you set your mind to. May this birthday be the start of a beautiful beginning, and may you receive ungodly amounts of cake!

152. Such a lovely person deserves an even lovelier birthday. May it be that and so much more this year. Thank you for being not just a wonderful in-law but a wonderful person as well.

153. “During life’s highs and lows, hurts and happiness, a sister is always there.” Catherine Pulsifer

154. I know that deep down you are secretly pining for me and married my younger brother to be close to me, Sister-in-Law. At least, that’s what I tell myself because the concept of someone actually liking my little brother is too hard to fathom! Happy birthday to my secret admirer!

155. My dearest sister-in-law, I hope that today is a great day for you, Because it can be no other way!

156. Sister-in-Law, while it’s true you are a very likable person, it’s your feisty wit, endearing spirit, and loving nature that really take the cake. Speaking of which, I hope you have an amazing birthday that is topped only by how amazing your cake is.

157. I love seeing you happy, my dear sister-in-law and I hope you’ll be extremely happy today because it’s your birthday!

158. Wishing a happy birthday to my loving sister-in-law. You are the glue that holds our family together, and we’re all so lucky to be in the same family with you.

159. Thank God that I have a sister-in-law like you who tells me all the dark secrets of her brother. Otherwise, I wonder how I would tease and taunt my husband. Happy birthday.

160. I am so jealous that my older brother has such an amazing person in his life. How did he get so lucky in meeting you? If only you had a brother! Oh well. I hope you have a good birthday anyway, and that you receive countless presents, yummy food, and a super chocolatey cake.

161. I wish you a happy birthday my lovely, I hope you and my brother are really happy and I wish you endless luck and joy in life!

162. May your life be full of only joyous and tranquil moments. And if that isn’t possible, may it at least be full of lots of wine, chocolate, and bubble baths. And in that spirit, I have brought you the biggest chocolate cake I could find. Happy birthday Sister-in-Law!

163. It truly is fantastic to be able to have such a wonderful sister-in-law. I hope that you will have an absolutely unforgettable birthday today. You deserve it! I am extremely grateful to be able to celebrate today by your side!