50+ Best 21st Birthday Captions for Instagram

21st birthday captions

Celebrating #21 this year? You’re going to need the best 21st birthday captions to ring in hitting the big 2-1.

21 is a major milestone birthday and you’re going to want to document every single moment on your social media. Whether you’ll be sipping cocktails with your crew or low-key hanging with your family, you’ll have plenty of memories to share on the ‘gram! Keep scrolling to find the best 21st birthday captions for Instagram to pair with all your 21st birthday memories:


Best 21st Birthday Captions

You are too busy planning your 21st birthday bash to think about catchy captions! Copy and paste one of these best 21st birthday captions on your big day:

  • Hello, 21
  • Cheers to 21 years!
  • I’m 21 and fun
  • 21 years of being fabulous
  • Yes, you can always see my ID
  • 21 looks good on me
  • Time to make some pour decisions
  • Blackjack!
  • Season 21, episode 1
  • Sip happens on your 21st

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Captions for 21st Birthday

Hit me with your best shot! Copy and paste these captions for your 21st birthday this year:

  • Card me, I dare you
  • Achievement unlocked: 21
  • Just here for the cake
  • Sassy since [year of birth]
  • Some nights should last forever
  • Let the birthday festivities be gin
  • Feeling real hoppy on my 21st birthday
  • There’s a thirst time for everything
  • Who wants to see my ID?
  • I’ve been pre-gaming 20 years for this moment

RELATED: 200+ Best Instagram Captions


21st Birthday Captions Instagram

Go shawty, it’s your birthday! Grab one of our 21st birthday captions for Instagram tonight:

  • Happy beer-th day to me
  • On a scale of 1–10, I’m a solid 21
  • Chapter 21
  • On cloud wine
  • Hakuna ma-vodka: it means no worries on your 21st birthday
  • Established in [year of birth]
  • I’m 21 today, BRB gotta go get carded
  • Chasing drinks and dreams tonight #21
  • 21st lap around the sun
  • Making a wish for #21

RELATED: 100+ Best Short Instagram Captions

21st Birthday Instagram Captions

Ready to PAR-TAYYYYY? We’ve got the best 21st birthday Instagram captions to pair with your party pics:

  • 21? Bring it on!
  • I hope the birthday cake is as sweet as me
  • Aging and raging
  • I’m 21 and hot, buy me a shot
  • RIP to my fake ID
  • Act my age? OK!
  • Today a queen was born
  • I’m not getting older, I’m getting better
  • “Throw some glitter, make it rain.” — Kesha, “Blow”
  • Having a pitcher-perfect 21st birthday
  • Just because it’s legal doesn’t mean it’s a good idea

RELATED: 50+ Best Good Night Captions for Instagram

21st Birthday Wishes

Not sure what to caption your pics of a friend’s 21st birthday? Use one of our 21st birthday wishes:

  • 21 and you’ve never looked better
  • Helping this one ring in #21!
  • You glow, birthday girl
  • Today we say goodbye to our friend, your fake ID
  • Happy 21st to my BFF, I promise I’ll hold your hair back later!
  • Don’t ever let anyone dull your sparkle. Happy #21
  • Can’t wait to party with my favorite 21-year-old
  • 21 trips around the sun, happy birthday!
  • Facebook had some exciting news today, happy 21st
  • Looking like the best party favor

21st birthday captions

21st birthday captions

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