Wish your sister or sister-in-law a happy birthday with our list of 100 birthday messages for sisters. From sentimental to funny, choose one to write in a card.

Happy birthday to my chosen sister! Happy birthday to the woman I call sister. Life brought us together for a reason. Happy birthday, sis! We may not be related, but you are 100% my sister. Happy ...

Happy birthday to my person, my rock, my friend forever, and my sister. Words can’t accurately describe the love I have for you. Wishing you a birthday as wonderful as you are.

Happy birthday! Happy birthday to my chosen sister! Happy birthday to the woman I call sister. Life brought us together for a reason. Happy birthday, sis! We may not be related, but you are 100% my ...

Brooklyn Beckham and Nicola Peltz wished his sister Harper Seven a happy 14th birthday on Instagram on July 10 amid reported ...

Happy birthday to the sister who keeps me up to date on TikTok trends. First your sour, then your sweet. Well, sometimes. Happy birthday to my personal little Sour Patch Kid!

Jamie Foxx penned an emotional tribute to his sister Deidra Dixon on her birthday on Thursday, August 1. 'I am forever grateful for you and today,' Foxx wrote on Instagram.

Happy birthday to my person, my rock, my friend forever, and my sister. Words can’t accurately describe the love I have for you. Wishing you a birthday as wonderful as you are.