21st Birthday Instagram Captions for All Your Party Photos

Alexa Losey holding 21st birthday balloons on a balcony
via Instagram: @alexalosey

"Some may say it was whiskey."

Best 21st Birthday Instagram Captions

Turning 21 is kind of a big deal. Okay, not kind of, it's a huge freaking deal.

You're finally old enough to (legally) drink and can get into just about anywhere and do anything... well, except rent a car, but that's not important. What matters is that you're finally the big 2-1.

We're sure you'll partake in an over-the-top celebration (as you very well should), so you're likely to snap plenty of pics during your birthday party. For all of those photos you share on Instagram, we've got the best captions for you to choose from. Keep scrolling to see your options!

A post shared by Lele Pons (@lelepons) on

•"Some may say it was whiskey." -Unknown

•"It's my 21st birthday, pass the booze." -Unknown

•"I'm 21 and hot, so buy me a shot." -Unknown

A post shared by Alexa Losey (@alexalosey) on

•"21 and legal; proceed with caution." -Unknown

•"When a man is tired of life on his 21st birthday it indicates that he is rather tired of something in himself." -F. Scott Fitzgerald

•"Cheers and beers to my 21 years." -Unknown

A post shared by Zendaya (@zendaya) on

•"At twenty-one, so many things appear solid, permanent, untenable." -Orson Welles

•"21 and brewed to perfection." -Unknown

•"I have mixed drinks about these feelings." -Unknown

A post shared by Alexa Losey (@alexalosey) on

•"Cheers to pour decisions." -Unknown

•"21 and ready for fun." -Unknown

•"Being 21 isn't all it's cracked up to be. You have to start buying your own toilet paper." -Melanie White

👯‍♀️💁🏻‍♀️👯‍♀️ squad

A post shared by Becky G (@iambeckyg) on

•"Birthday girl, get ready to disgrace yourself." -Unknown

•"Let us celebrate the occasion with wine and sweet words." -Plautus

•"Let the celebrations be gin." -Unknown

A post shared by Madelaine Petsch (@madelame) on

•"Want to see my ID?" -Unknown

•"First legal drink." -Unknown

•"It's my 21st birthday! Now I can do all the things I was already doing, but wasn't supposed to be." -Unknown

A post shared by Teala Dunn (@ttlyteala) on

•"I doubt tequila is the answer, but it's worth a shot." -Unknown

•"Sip happens." -Unknown

•"Let's get trashed." -Unknown

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