Discover a collection of funny birthday wishes for your sister that will make her laugh and feel special on her big day. Perfect for sharing!
Happy birthday to my sister! Remember, age is just a number, but in your case, it’s a really big one!
Cheers to my sister! You’re not getting older, you’re just increasing in value. Like fine wine… or expired milk!
Happy birthday! I would have bought you a really nice gift, but then I remembered you already have me!
Sister, you’re like a fart – you bring a lot of joy, but we really wish you wouldn’t happen so often!
Happy birthday! Don’t worry about your age; you’re still younger than you’ll be next year!
Congrats on surviving another year with me as your sibling! Happy birthday, sis!
Happy birthday to the only person I’d share my snacks with! That’s true love right there!
Sister, you’re like a software update – whenever I see you, I think, ‘Not now!’
Happy birthday! Just remember, the older you get, the better you were at everything!
On your special day, I hope your cake is as sweet as you are… and that your candles don’t set off the smoke alarm!
Happy birthday! Let’s eat cake like there’s no tomorrow… because calories don’t count on your birthday!
Sister, I love you more than pizza! And that’s saying a lot. Happy birthday!
Happy birthday! You know you’re getting old when the candles cost more than the cake!
Wishing you a birthday as fabulous as your hair on a good hair day! Cheers, sis!
Happy birthday! May your day be filled with cake, laughter, and the realization that I’m still the favorite child!
Sister, age is merely the number of years the world has been enjoying you. So, enjoy your day!
Happy birthday! Just like fine wine, you’re getting better with age… or at least that’s what I’ll keep telling you!
Cheers to another year of us making memories and me annoying you! Happy birthday, sis!
Happy birthday! Remember, you’re not old, you’re just retro!
Sister, I hope your birthday is filled with as much joy as you bring to my life… which is a lot!
Happy birthday! May your day be more fabulous than that time you borrowed my clothes!
Wishing you a day filled with laughter and cake, because you’re sweet enough to deserve both!
Happy birthday! Just remember, you’ll always be older than me… and that’s a win for me!
To my sister, may your birthday be filled with as much fun as we had when we were kids (minus the fighting)!
Happy birthday! Don’t worry, I won’t tell anyone how old you are… this year!