Keep bringing joy to all those around you. Happy birthday, sister-in-law! When you blow out your candles, I hope that all your wishes and dreams come true. Happy birthday, sissy! When times are ...

A sister is not merely family; she is a best friend, confidante, and guiding star in our existence. Her birthday is the right ...

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

That’s why it’s so important to find the right birthday wishes for sister—to let her know you care. Ahead, find the best birthday wishes for your sister that will make her feel great about ...

Give your brother or sister a special birthday wish to express your love for them. 88. Happy birthday to a fabulous [brother/sister]. I can’t picture my life without you and am so glad you’re ...

Happy birthday, sister. I can’t believe you wanted to marry into this wacky family. I guess you must be just as wacky as the rest of us! Best wishes on your birthday, sister-in-law. Happy birthday to ...

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

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 ...