21st Birthday Captions For Instagram: 75+ Ideas To Celebrate In Style

21 Birthday Captions For Instagram

21 is not just a number. It's a new way of life. It's a wonderful occasion to reflect on all the great memories you've made and all your stories. They make you who you are. This is why 21st Birthday captions for Instagram can feel like such a big deal.

Whether you are wishing your best friend a happy 21st birthday or it's your own birthday, you came to the right place to get ideas for birthday captions for Instagram!

The Best 21st Birthday Captions For A Pitcher Perfect Birthday

Get ready to have so much fun and create the most beautiful and happiest event of your life. Use these 21st birthday captions for Instagram to tell your best friends that you are in the birthday spirit and ready to break out the mixed drinks!

Let the celebrations begin, but don't be in such a hurry to drink champagne all night. You still have many crazy years ahead!

1. Just because I'm legal doesn't mean I have to act my age 🎉 #21stBirthday
2. Another year older and (hopefully) wiser! #21 🍾
3. If you don't turn up on your 21st birthday, did you even really turn 21? #partyanimal #bringonthecake
4. Time to get wild! My #21stbirthday is officially underway and I'm ready to party!
5. "First, the law wouldn't let me drink. Now, my best friends won't let me have mixed drinks." - celebrating my first year of being a legal adult! #21stbirthday 🤷‍♀️🥂
6. Feels like only yesterday, I was celebrating my 20th birthday. Today, I'm celebrating my 21st birthday. Time flies when you're having fun! #21stbirthday #partyon
7. One more year until I'm legitimately a lawyer - until then, birthday cake! #adulting
8. Can't believe I'm already 21! Time flies when you're having fun 😊 #birthday
9. Legal at last! Cheers to another year of adulting 🍻
10. So long, good sense! It's time to celebrate turning 21 and finally being able to enjoy a happy birthday drink #cheers
11. "A little bit older, but not a day wiser." Happy 21st birthday to me! 🎉
12. Look who's rocking the birthday crown 👸🏻✨ Let the party begin! #21stbirthday
13. Sometimes life is just a party! Happy 21st birthday to me! #adulting
14. "A year older, but not a day wiser." - anonymous genius 🧠💅
15. Here's to adulting! 🎉🥂 #21finally
16. Carpe diem - and lots of birthday cake! Here's to a new year and endless possibilities. #21stbirthday #newbeginnings
17. Popping bottles and celebrating my 21st birthday with my crew! Cheers to a new decade filled with lots of shenanigans. #bringonthefun
18. All grown up and LEGALLY able to drink! #partytime #21stbirthday
19. One year closer to finding out what this whole "adulting" thing is all about 💫 #bringonthe20s
20. Legal AF. Bring on the fun filled birthday hangover #letsdothis
21. One more year until I can rent a car without getting charged an extra fee! #21andup
22. Birthday girl ready to have a fantastic birthday!
23. Dear 21, please let my birthday wishes come true today 🙏💕
24. One day you're a child, and the next day you're examining your inner child. Time really does fly! 🤯
25. One year closer to being comfortable with admitting I don't know what I'm doing with my life. Cheers to another year of figuring it out!
26. Turning 21 is only as big of a deal as you make it. Luckily, I'm making it a pretty big deal. #partyon
27. Just because I'm a year older doesn't mean I'm not still 21 at heart. Cheers to another year!
28. If you don't post a pic of your birthday festivities on social media, did it even really happen? #21stbirthday #partyon
29. Hey mimosas. It's my birthday. I'm twenty one now, and you better watch your back
30. One year closer to legally being able to buy alcohol! #happybirthdaytome #21
31. Just another day enjoying the fact that I don’t technically have to adult today. #21
32. Toasting to another year of beingfabulous #adulting
33. Funny birthday caption goes here

What Should I Caption My Birthday Instagram Post?

Posting a happy birthday caption to yourself is one thing, but you can also use the opportunity to thank your best friends and family members for making your day special.

1. Just another year older, but feeling more blessed than ever! #Birthday #Celebrate
2. Feeling so grateful to my best friend ❤ You're friendship is the only birthday gift I need
3. Turning a whole year older but just a hint wiser #birthday #selfie
4. Another year older but it feels like I'm just getting started ✨ #birthdayvibes
5. Best. Birthday. Ever. Thank you to all of my amazing friends and family who made this day so special #Love
6. Time to celebrate another year of life 👸🎂 Thanks for all the birthday wishes!
7. Celebrating another year of life and all that comes with it! #Birthday #Blessed
8. Celebrating another year of life and all that comes with it! Thanks for all the birthday love, #friends!
9. Here's to being young and wild with my best friend!
10. Birthday vibe feeling blessed with my birthday glow 💅🔥
11. Living my best life and celebrating another year! Cheers to another year of adventure!
12. Can't believe another year has gone by! Having a wonderful birthday #enjoyinglife
13. One more year older, and one step closer to my goals! #birthday #goals
14. Living my best life and celebrating another year of being alive and happy! Thank you to everyone who has made this past year so special!
15. Living my best life and feeling grateful for another year 🎉 #birthday #grateful
16. Celebrating another year of life and counting my blessings!
17. Feeling thankful for another year of life and all the amazing gifts that come with it! #blessed #birthday
18. Just because I'm a year older doesn't mean I can't still party like a rockstar! #celebrate
19. Celebrating another year of life and all that comes with it! #happiness #birthday
20. It's getting harder to blow out that last birthday candle! 🎂
21. Celebrating another year of life and all that comes with it! #birthday #goals
22. Just another year of being fabulously me! #birthday #selfie
23. It's my party and I'll cake if I want to! #birthdaygirl #cakeboss
24. One year older, wiser, and more fabulous than ever 💋
25. Here's to another year of life and java... my two favorite things! #birthday #javaholic
26. Here's to another year of making memories and living life to the fullest!
27. Just another year of being fabulously happy and fabulous! #birthdayvibes # selfie
28. Turning another year older, but feeling priceless 365 days a year!
29. It's my party and I'll post whatever I want! #Birthday feels #21
30. Living my best life and feeling 10 years younger today! #birthdayvibes
31. Just another day in paradise 🌴 #birthday #funinthesun
32. It's my birthday, and I'll post whatever I want!
33. “One more year of being fabulous!”

What Are Some Good Wishing Happy Birthday Captions For IG?

Good 21st birthday captions for Instagram may seem hard to write. You only get to turn 21 once and you don't want to come across cheesy or boring like "dear self, happy birthday."

Not to worry, here are the best birthday captions to kick off your birthday celebration in style.

1. Party time! It's your birthday, and I'm ready to celebrate! #birthday #happybirthday
2. One more year as best friends, one more year of adventure!
3. It's your birthday and I'll be happy if I want to! #happybirthday
4. Happy beer th day 🍻
5. wishing you nothing but laughter and good times on your special day! #happybirthday
6. It's my birthday, and I'll post what I want to! Thanks for all the birthday love, everyone!
7. Birthday vibes only! #anotheryear together with the most awesome boyfriend ever 😎
8. Birthday cactus for the birthday girl 🌵🎂 #happybirthday
9. It’s my birthday and I’ll be happy if I want to! #turninganotheryearolder
10. Wishing you the happiest of birthdays! You deserve all the good things life has to offer!
11. Birthday mood: 100%
12. It's my birthday, and I'll party if I want to! P.S – Please don't stop the music 😉
13. Here's to another year of making amazing memories! #HappyBirthday to me!
14. Wishing you tons of birthday cake but please eat slowly
15. It's my birthday and I'll shine bright like a diamond! #happybirthdaytome
16. Birthdays are the best days to be happy and fab! #selfie #happybirthday
17. Time to celebrate! Another year in the books and so many more to come! #HappyBirthday
18. Celebrating another year of life and all that comes with it! #happybirthday
19. Wishing you all the happiness your birthday can hold! #happybirthday
20. Warmest wishes today!
21. Party on! It's your birthday! Can't wait to make so many amazing memories with this wonderful person 💞
22. If you don't believe in magic, your birthday wishes won't come true!
23. Here's to another year of making memories and celebrating life! #HappyBirthday
24. Celebrating another year of life and all that comes with it! #happybirthday
25. Living my best life and making the most of every moment! #happybirthdaytome
26. The best birthday gift is staying young at heart
27. How old is that in dog years?
28. Birthdays are the best days to eat cake and be surrounded by the people you love! #happybirthday
29. another year, another amazing birthday! Thanks for all the birthday love, friends!
30. Celebrating another year of life and all that comes with it! #happybirthday
31. One more year of life, one more reason to celebrate! Happy 21st birthday!
32. another year, another amazing birthday! Thanks for all the birthday love, friends!
33. Today is a day to celebrate life and all that comes with it! And birthday cake!

It's Time Put On Your Birthday Crown And Celebrate!

No matter how old you are, birthdays are always a cause for celebration. Whether turning 21 or 51, an Instagram post is the perfect way to commemorate the occasion. But coming up with a clever caption can be tough.

We hope this list of the best 21st birthday captions for your next Instagram post gave you some ideas to celebrate in style!