101. I’m celebrating our wonderful friendship on your birthday.
102. Friends may come and go, but sisters are forever. Happy birthday!
103. I hope this birthday celebration will mark the start of a year full of happiness, memorable moments and dreams coming true.
104. People say that it is the thought that counts, so I want you to know that I really thought about giving you lots of lovely things for your birthday - like that top you wanted, and those cool shoes. However, this card will have to do as I'm totally broke! I still love you lots! Happy birthday and hope you have a brilliant day!
105. Sister, no other person could ever hold a candle to you, because you are too hot to handle! Happy birthday to my older, lovely, and feisty sister.
106. Wishing a birthday that's as beautiful as you are, inside and out, to my lovely sister-in-law.
107. May your birthday be filled with much joy and many blessings.
108. Happy birthday to the funniest, prettiest, happiest person I know - you! I hope you have a great day my dear sister, and may life bring you much joy and prosperity.
109. You are one seriously resourceful woman, sis. I know this because I remember all those times you managed to finagle yourself out of trouble when we were kids. I also know this quality will take you far in life. Happy birthday, sister!
110. We are sisters by chance but friends by choice. Happy birthday, love!
111. It's time to celebrate! May you have many glasses of champagne to drink tonight and may you find the perfect person to buy them for you! Have fun, and happy birthday!
112. Happy birthday, gorgeous! I am grateful for all of our memories and excited to create new ones together!
113. Wishing you a wonderful birthday today! Thanks for being such a brilliant sister and my best friend!
114. You are one of my biggest inspirations. Wishing you the happiest birthday!
115. You're finally 21! Now you can legally do all those things that you've been doing since you were 16! Happy birthday!
116. My best friend and mentor has grown a year older today. Wishing you a very happy birthday, sis.
117. Happy birthday sis! I really wanted to get you something incredible for your birthday, but then I realized that my presence alone would be spectacular enough. You're welcome!
118. Thank you for always being there for me. You are the real gift today! May all of your dreams and wishes come true - you deserve it all and more. Happy birthday!
119. You have impacted my life beyond measure, and for that, I will always be grateful. Thank God for sisters!
120. Hooray, it’s your birthday! Probably the only thing that we didn’t have to share as kids! Today it’s all about you—have fun and enjoy your special day!