Birthday Wishes for Sister

Birthday wishes for your Sister — pick a message that fits the moment, copy it, or share it instantly.

  • Heartfelt

Happy birthday, sis. Of all the people I could have grown up beside, the universe gave me you. The first person who knew every weird thing about me. The first person who never made me feel weird about any of it. I'll never stop being grateful for the assignment , for the random, holy accident of growing up beside you. Happy birthday, my first and forever friend.

  • Heartfelt

Twenty-one, sis. The world is opening up , go meet it on your terms, the way you've always done. Just remember to call home sometimes. Happy 21st.

  • Funny

Happy birthday, sis! You're the only person I can fight with at 9am, laugh with at noon, and overshare with at midnight — all without consequences. Don't ever change. (Okay, maybe the borrowing-my-clothes part.)

  • Heartfelt

Happy birthday, sis. Some part of me was already learning how to love by watching you. The rest of me is still trying to catch up.

  • Funny

Happy birthday, sis. We grew up in the same house. We survived the same chaos. The fact that both of us turned out functional is a greater achievement than anyone gives us credit for.

  • Heartfelt

Forty looks unfairly good on you, sis. May this decade hand you back every brave, generous thing you've poured into the rest of us.

  • Funny

Happy birthday, sis. I would say you're the better one of us, but it would make you insufferable. So I'll just say you're excellent, in a very close second-place sort of way.

  • Funny

Happy birthday, sis. I genuinely cannot believe we are both adults. It seems implausible. And yet here we are. Happy birthday to my favorite implausibility.

Scroll to Top