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.

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. Funny birthday wishes for sister I’m sorry I said you were ...

Regardless of your beliefs, wishing your loved one a happy heavenly birthday can provide a sense of comfort while giving you ...

Whether you’re looking for birthday wishes for little sister, your big sis, sister-in-law, or even your chosen sister, finding the right words to honor the day she was born will bring a smile to ...