A 21st birthday is definitely a main-feed event! Finding the right words to go with that perfect photo can be tricky. Whether you're going for funny, cute, or celebratory, here is the ultimate list of captions for their big day.

21st Birthday Captions for Social Media

Short & Sweet

21. ✨

Season 21, Episode 1.

Cheers to 21 years. 🥂

Entering my twenties era.

Level 21 unlocked.

Funny & Sassy

Officially 21, but still mentally about 17.

Got the key to the door, now where does it go?

Serving cake and looks. 💅

In my 21st birthday era. Bejewelled, obviously.

For the Photo Dump

21: a weekend for the books. 📖

Couldn't pick just one. HBD to me!

The one where I turn 21. 🎬

Thanks for all the birthday love! ❤️

Hashtag Ideas

`#21stBirthday` `#TwentyOne` `#BirthdayVibes` `#Chapter21` `#KeyToTheDoor` `#Finally21`