If you’re celebrating your birthday, you want to celebrate with your friends and followers on Instagram! Here are some ideas for the perfect 21st birthday captions to mark the big milestone!
21st Birthday Instagram Captions
Happy birthday to you! Here are some 21st birthday captions to celebrate on social media!
- Cheers to 21 years!
- 21 candles 🎂
- Twenty One.
- 21 laps around the sun ☀️
- 21 looks pretty good to me.
- 21 years of life.
- Do your thang 21 🥂
- Cheers 🥂 and beers 🍻 to 21 years.
- Make a wish 🎂 #21
- 🚨 21ST BIRTHDAY ALERT 🚨
- 21 looks good in [wherever you’re celebrating].
- Who wants to take me to Vegas?
- Take me to the bar 🍹
- Joining the 21 club.
- You only turn 21 once.
- Finally legal and ready to make some amazing memories! Happy 21st birthday to me! 🎉
- Stepping into adulthood.
- Take me on twenty one.
- It’s fun turning 21.
Short 21st Birthday Captions
You don’t need long descriptive captions to celebrate your 21st. Here are some short and sweet captions for your 21st birthday.
- •21•
- 21 wishes.
- 21 starts here.
- Goodbye 20.
- ~21~
- Roaring Twenties
- XXI
- ♡ Twenty One ♡
- ID me.
- Twenty1
- 20 + 1
- Who’s 21? 🙋
- Hello 21
- 21 vibes
- Card me.
21st Birthday Captions for Yourself
What better way to celebrate your 21st birthday than with a selfie? Smile!
- Established [year].
- Chapter 21 begins today.
- Feelin’ 21.
- 21 & me🥂
- Season 21, Episode 1
- The one where I turn twenty-one.
- This is what 21 looks like.
- 21 years of growth.
- ♓2️⃣1️⃣♓ (Choose your own horoscope emoji)
- Oh wait did I just turn 21…
- Celebrating 21 in [colour of your outfit].
- Hi. It’s just me turning 21.
- This is 21.
- Drinks on me 🤪
- So this is what 21 feels like.
- Happy birthday to me 🥳
- 21 and officially adulting! Let the adventures begin!
- I can’t keep calm, it’s my 21st birthday!
What is special about 21st birthday? A 21st birthday is often a symbol of adulthood and independence. In many countries, such as the US, 21-year-olds are legally recognised as adults. It’s the legal age for drinking alcohol, and so it often becomes a big celebration!
Unique 21st Birthday Captions
Some more 21st birthday captions to help celebrate you!
- Chapter 21, Page 1.
- 7670 days old.
- From a princess to a Queen 👑
- Help. I’m an adult.
- 21 birthdays later.
- Twenty FUN.
- Warning: It’s my 21st birthday.
- Cheers to 2️⃣1️⃣ years🥂
- It’s been 21 years y’all!
- 🖤 T W E N T Y . O N E 🖤
- Level 21 🎮
- 21 can you do somethin’ for me.
- One and twenty.
- On this day, 21 years ago, a legend was born.
- Cheers to legal shenanigans and making memories! 🍻
- 21st birthday mode.
Going out for drinks and dinner to celebrate your 21st? Check out our dinner captions!
Funny 21st Birthday Captions
21st birthday captions don’t have to be boring! Add a bit of humor to your post!
- I have mixed drinks about turning 21.
- It’s my 21st, and I’ll wine if I want to!
- 21 orbits 🌎
- Candles aren’t the only thing getting lit tonight.
- Anybody want to see my ID?
- 21 reasons to act up.
- Twinkle twinkle little star, point me to the nearest bar ⭐
- 🤘🖕
- 21 years of existence.
- 100 years old (in dog years) 🐶 (perfect with a selfie with your pet!)
- On 21st birthdays we wear [colour of outfit].
- 21 years ago the world changed 🌎
- 21 – lets make some pour decisions!
- Apparently I’m an adult now.
Inspirational 21st Birthday Quotes for Myself
Add a dash of inspiration to your birthday caption.
- 21, I’m ready for you!
- 21 is when I make my dreams happen.
- 21 years of shining bright ✨
- Intention. Purpose. Growth. Gratitude.
- The future is mine #21
- Doing 21 my way.
- 21? Bring it on.
- 21: A new chapter.
- Here’s to turning 21 and embracing adulthood with a head full of dreams and ideas, and a spirit ready to soar! ✨
- Writing chapter 21.
- Ready to take on the world.
Inspirational 21st Birthday Captions Tip: Write down everything you achieved last year, and what your goals and dreams are for this year. You can dream big, but don’t forget the small things too!
21st Birthday Party Captions
If you’re celebrating with friends and family, these captions are the perfect way to sum up your party! And if you’re dancing all night, check out our dancing captions!
- My 21st birthday party was just how I imagined it to be! 😍 Thank you to everyone who came to celebrate with me!
- Thank you to everyone who was part of my special day!
- Such an amazing day! Thank you to everyone who made my 21st incredible.
- Who needs a birthDAY when you can have a whole weekend?!
- It was fun turning 21!
- 21st birthday shenanigans 🎈
- What an epic night with family, friends, food and fun.
- Thank you for creating memories and celebrating my 21st with me!
- Celebrating 21 is always better with your besties.
- 21 you did not disappoint.
- I wouldn’t want to celebrate my 21st with anyone else!
- The best way to start 21.
- Gonna party like I’m 21.
21st Birthday Captions Song Lyrics
Here are some song lyrics that capture the 21st birthday mood!
- We gon’ party like it’s your birthday. We gon’ sip Bacardí like it’s your birthday. – 50 Cent, In Da Club
- Out in the club, and I’m sippin’ that bub – Lady Gaga, Telephone
- I’m 21 now, oh I’m 21 – H.E.R., 21
- She just turned twenty-one, now she wanna go to Vegas. – Yung Pinch, 21
- Everybody put ya glasses up, and I drink to that. – Rihanna, Cheers (Drink to That)
- Don’t be fancy, just get dancy. – Pink, Raise Your Glass
- Hit me with your best shot. – Pat Benatar
21st Birthday Captions for Friends & Family
Not your birthday? Looking for some captions to celebrate the 21 year old in your life? These captions are for you!
- The last 21 years have been an amazing journey. You’re going to continue to do amazing things and I’m so grateful that I get a front row seat!
- 21 years ago you made me a [relationship] and became the most important person in my life.
- 21 years ago you changed my world 🌎
- Happy 21st Birthday to my amazing [daughter/son/kid]. [She/he/they] came into our lives [6 weeks early etc.] and has accomplished great things and I know [he/she/they] will accomplish many more!
- Happy 21st birthday! I am so incredibly proud of all that you do and all that you are.
- This amazing little human is now 21 years old. How did that happen?! I swear you were a newborn snuggled in my arms just yesterday!
- Can’t wait to celebrate 21 with you!
- I hope your 21st is as special as you are ❤️
- This extra special human has been calling me mom/mum/dad for 21 years! He/she makes me proud each and every day.
What did you caption your 21st birthday post and how did you celebrate? Comment below!
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Lindsey is the creator and writer behind The Caption Library. She’s worked in social media marketing since 2011 and has worked with a range of magazines, small businesses and bloggers. She enjoys being creative, whether it’s writing for her blogs or running her Etsy store!
