Your first best friend deserves more than “HBD.” Here are heartfelt, short and funny birthday wishes for your sister — copy one in a tap, make it yours, or drop it into a free animated card with your photos.
Sentimental, the way sisters actually are underneath the teasing.
Happy birthday to my first best friend. We’ve shared a room, a wardrobe, and every secret worth keeping — and I’d do it all again. I’m so proud of who you are. Love you more than I say.
There’s no one who gets me quite like you do. Thank you for a lifetime of having my back. Happy birthday, sis — I hope this year gives you everything you’ve given everyone else.
Growing up with you was the best kind of chaos. You’re my favorite person to laugh with and the first one I call. Happy birthday to my sister and my forever friend.
Happy birthday to the sister who’s equal parts my hero and my headache — and I mean that with my whole heart. So grateful it’s you.
Short & sweet birthday wishes
Easy to text or write inside a card.
Happy birthday, sis! Love you endlessly. 💕
To the best sister ever — have the day you deserve!
Happiest birthday to my built-in best friend. 🎀
Another year of you being wonderful. Love you, sis.
Funny birthday wishes for your sister
A little roast, a lot of love.
Happy birthday to the sister who still owes me three sweaters and one very specific hoodie. Love you anyway. 😉
We’re not getting older, we’re just increasing our value as vintage. Happy birthday, sis!
Happy birthday! Thanks for lowering our parents’ expectations before I came along. 😆
You’ll always be my favorite person to annoy. Happy birthday, sis — never change.
Frequently asked questions
What should I write in a birthday message for my sister?
Mix warmth with a shared memory or an inside joke — sisters love the mix of sweet and teasing. Take any message above and add one detail only the two of you would get.
What’s a sweet short birthday wish for a sister?
Try: “Happy birthday to my built-in best friend — another year of you being wonderful. Love you, sis.” Short and heartfelt reads perfectly as a text.
Can I make a birthday card for my sister?
Yes — pick a message, then create a free animated birthday card with your photos and a heartfelt note, sent as one link. No sign-up, no watermark.