41. You’re simply the best! Happy birthday, sissy.
42. I’m so lucky to be your sister.
43. I love you so much! Happy birthday to my best friend.
44. Happy cake day, sister!
45. I can’t wait to celebrate with you. Happy birthday!
46. Nobody can shake it like my sissy can! Hope you have the best celebration.
47. My sister is better than your sister. Happy birthday, sissy!
48. Happiest of birthdays to the girl who got me through childhood.
49.