Cake is mandatory, growing up is optional. Let's eat cake and pretend we're kids again! Happy birthday, sis!
Happy birthday to the one who steals my clothes and my heart. Here's to more shared wardrobes and endless laughter!
Aging like fine wine, or maybe just getting more fermented. Cheers to another year, sister!
Another year older, wiser, and still putting up with me. Happy birthday, sis!
Age is just a number, but you'll always be older than me. Happy birthday, sis!