Do happy birthday wishes for your sister have you scratching your head? She’s your best friend. Your partner in crime. Your ...

I love you so much. Happy birthday! You’ve always been my biggest supporter. Wishing you the absolute best birthday, sister! We may not have known each other our entire lives, but it sure feels ...

Ahead, find the best birthday wishes for your sister that will make her feel great about spending another year by your side, and vice versa. I’m sorry I said you were old, I thought that was obvious.

and inspirational birthday wishes for any sister in your life. Happy birthday to my built-in best friend. You are undoubtedly one of the best people I know, and definitely the best sister in the ...

She borrowed (and never returned) your favorite blouse, took your side during fights with your parents, offered a shoulder to cry on during your first break up—you name it, she’s been with you ...

Despite how cold and formal the “sister-in-law” title sounds ... messages we’ve got down below. (And tell your girl we said happy birthday!) ...

Happy birthday, sister! Cue the cocktails, sis! It's time to celebrate your special day! Thanks for being the best gossip in the fam. Childhood would have been so boring without you! Happy birthday to ...

95. Don’t forget to save the biggest slice of cake for your favorite sibling. Happy birthday to a one-of-a-kind [brother/sister]. I love you endlessly! 96. Happy birthday to the person who’s ...

Do happy birthday wishes for your sister have you scratching your head? She’s your best friend. Your partner in crime. Your confidant. Your mentor, your biggest cheerleader, and your helping ...