Ahead are the best 21st birthday quotes, song lyrics, and captions for you to slay your b-day Insta post.

21st birthday is not just another birthday, it is a milestone that deserves to be celebrated in every big and small way. The special day signifies one’s impeccable transition from adolescence to ...

Tate McRae gave the Australian rapper a 21st birthday shout-out on her Instagram Stories on Aug. 17, and shared a sweet video of the pair dancing together.

The ‘Karma’ singer celebrated by drinking "around the world" at Epcot's 11 country pavilions JoJo Siwa/Instagram JoJo Siwa rang in her 21st birthday with a tipsy day at Disney. The “Karma ...