There are a lot of 21st birthday captions for Instagram that you can use in order to celebrate such an interesting age. Of course, you should choose the best one that you feel is going to fit your caption perfectly. However, most of them are amazing and you should take advantage of them as much as possible. If you need some help, it is always a good idea to check what other people are posting on their other social media pages. That way, you will be able to find out what they consider to be the best 21st birthday captions.
21st Birthday Captions For Instagram
- Wishing my favorite little brother a very happy 21st birthday! I love you and can’t wait to see all of the things you do in your life ❤️
- Wishing my brother @xxxxxxxx a very Happy 21st birthday. Can’t wait to see what this year brings you! Cheers to many more happy birthdays!
- It’s your birthday, feel it and own it because today you are 21, even if you’re not celebrating! Happy birthday.
- 21 can’t come fast enough (birthday soon!) Can’t wait to turn 21! Wish this birthday was tomorrow!
- I’m so grateful to all of the people who’ve had a positive influence on my life. Thanks for everything. 😗😢 #21stbirthday
- Happy 21st birthday to my other half. Here’s a photo of us from when I was 21 and he was 13. The years just fly by! And we’re still rocking the matching t-shirts 😂❤
- “Age is a matter of mind over matter. If you don’t mind, it doesn’t matter.” Mark Twain #Happy21stBirthday #Its21 #AgeIsJustANumber #YourAgeIsBeautiful
- “Yesterday is history, tomorrow is a mystery, but today is a gift.” ― Pablo Picasso #Happy21stBirthday #
- I’m 21. I’M 21!! Oh wait, that means I’m legally allowed to drink now! YAY! 🍾🎉
- Happy birthday to the best friend, partner, and little sister a guy could ask for! I’m so glad we found each other as kids. Here’s to getting older together!
- ✨✩🌟 Happy bday @xxxxx 🍭🍬🎂✨✩✨
- Ok, Birthday Boy, it’s your day, let’s have a blast.
- Great friends are like stars – you don’t always see them, but you know they’re there. Happy birthday to the person who’s always by my side whenever I need it and keeps me intact when it’s just impossible to do!
- Happy 21st birthday to our very own sweet @xxxxxxx! Chels, we are so beyond.
- Proud of you. You work so hard every day and are such a good sister and friend to everyone. Happy birthday.
- Forever young, forever 21. Happy Birthday, @xxxxx. Hope you have a great day!
- Let’s get this party started. I’m celebrating turning 21 with @xxxxxx because life is so much better when you are doing what you love, surrounded by all the people who make you feel alive!
- Let’s toast to you and your 21 years of life. You get to enjoy a year older, but also a year wiser and more awesome than ever. Congrats! *Cheers* 🎂
- Not bad for a 21-year-old. Today, I’m turning 21 and I could not be more excited for all the memories to come. Here’s to this journey and all the beautiful ones that have helped make this possible. 🎉
- It’s your 21st. Number-one! Number-one! You can have some cake if you want to; it’s okay. Oh, no, we don’t have to have a birthday cake.
- Happy Birthday to the most beautiful mother in the world. 21 years of you being such a great mommy, nothing can ever beat it. I hope we get the chance of making it to see your 50th birthday. Never stop being a great person.
- Let’s do an awkward toast for all the time we wasted not being friends. _21 #happyeasterndate
- It’s your birthday! What are you doing here? You should be busy living your best life.
- Turning another year older, but no less young at heart. May your day be full of wonder ✨ #HappyBday.
- Happy 21st Birthday to my favourite lady❤️ I can’t believe ya’ll are already old enough to legally drink alcohol. Who would have thought it possible?
- 🎂Happy 21st birthday to this babe, who makes every day better than the last! You’re a blessing and I love you! 🍰🍾🎉 #hola21 #21stbirth.
- I can’t believe my baby is 21 today 🎂 It’s a new season, a new chapter. I’m so excited to see what she will do next. Here’s to you @xxxxxxx, I love you Katie
- Why is it so crazy that I’m turning 21? Let’s get weird. 😎
- How about them 21 years? Started from the bottom now we here #🎉🍾
- Let’s get cheesy 🧀✨ #cheeseybirthday #myfriendchristianne #im21 😎
- Throwback Thursday to when we were 21. Happy 21st 🥂 #TBT
- If I could turn back time, I’d probably choose the same path 😉 My life has never been better than it is right now. Here’s to 21 more years of happy memories!
- Celebrating the 21st birthday of a friend with a fun, daring caption
- Happy birthday, baby! Celebrate your 21 st birthday in style by dining on our new fall menu items like the Monterey chicken salad 🍗, spicy chipotle chilaquiles ⚜️🌶 and decadent Nutella
- Happy 21st birthday (your name)! It’s so great that you are making your way into this world. We love you so much and cannot wait to see how amazing you will become in the next year!
- Happy 21st to the smartest, funniest, and most beautiful girl on the planet. Will you marry me? ️
- To the world, you might be one person, but to me, you are the world. Happy 21st birthday.
- Happy Birthday to my favourite human being on this planet. All ❤️s and 🎁s to you!
- Turning the big 2-1 today! 🎉 Thanks to all of my friends & family for making this special day so amazing. I love you all & here’s to another great year! #nyla
- We are complete, but we’re just beginning. So many more years to celebrate. Congrats! XOXO
- Throw it all back with these 21st birthday photo booth props 🎉🎈 #21Today
- Time has flown by and now it’s your 21st birthday! Happy 21st birthday caption idea, makes the person feel happy about turning 21.
- A new season calls for a new accessory. #21stBirthday
- 21 is the best age, the age when you are young enough that you don’t have to worry about retirement, but old enough to enjoy the future.
- *We’re not the age we were when we dreamed of being 21, but it’s our heart that makes us older and not years. – Glenn Richard Vallejo*
- Happy Birthday, Toots. Here’s to another year of friendship perfection. Cheers! #bffgoals #21
- Be your own kind of beautiful, be your own gem, you’re so damn precious. Once upon a time, there was a girl. You are that girl.
- Happy Birthday, to the most special person in my life. I will forever be in your debt for blessing this world with all your beauty.
- It’s your 21st birthday! Congratulations on turning over a new leaf. Keep inspiring us to find the meaning of life.”
- So excited to be 21! Let’s party 🎉!
- Wow, 21 years old! We can’t wait to see all the awesome things you’ll accomplish 👏
- Let me blow out your candles in style. Happy 21st Birthday!
- Happy 21st birthday to this gem *insert some kind of pun here*
- Happy birthday, Jack! We hope this year is filled with love, laughter, and lots of sweet treats.#21YouRock
- Throwback to a simpler time. Happy 21st, baby. ~~~
- I’m not sure if the stories were bad or just too many of them. I wish you had grown up a little more, but I had a lot of fun. 21, you are so young but so young to drink beer!
- We all have that one best friend who’s always so good-looking that we never let them know how much we appreciate them. Happy birthday!
- Celebrate the sweetest girl, friendliest soul, and sweetest smile. Happy Birthday, Lily! 🎁
- @lilykatehalstead #LoveYouLilyKathryn #LilyKahHalstead
- Enjoying that sweet time between being a youngin & getting old 😎🍹 #21stBirthday″
- At 21, we make choices. We choose our friends, our desires, and what we want to drink 🍸🎉 #21stbirthday.
- 🎈🎉 Happy 21st to the world’s most incredible, most important person. Here’s to 3 decades of friendship and love. #21isthenew15 #happybirthday #21yearsstrong #friends4lives53
- Happy 21st Birthday to the most spirited person I have ever known 🎊🎉 ‼️
- Happy 21st birthday to my buddy M-squared. I’ll never forget our first gig together in the band #bruhaha 😘😉👧
- Turning 21 is a thrill—but turning 20 was pretty awesome, too. Thanks for wishing me a happy birthday!
- Happy Belated 22nd Birthday to my best bud ✨🎈😜 #shakinuptheroom #loveyou #bffs4evahoodie
- Celebrate your next 21st with all of the things that you love! Your parents, siblings, and friends.
- This girl is turning 21 this year!! 🎉🎂 #twentyoneforyou
- 🎉🎂 happy 21st birthday to my soul’s twin, party crusher extraordinaire, and best friend, @xxxxxx!! I’d be dead inside on the floor if you weren’t around.
- Happy 21st Birthday to my baby boy, @xxxxxxx. You’ve grown into an amazing young man who always makes us so proud! We love you.
- Happy 21st birthday to my beautiful daughter. You’re loving, kind, and funny all wrapped up in one. #Happy21stBirthday.
- Where’s an Eggbert when you need one? 🎂🍳 #21birthday #birthdaygirl.
- 21 years old and still happy as a clam 😎 #kaitlynbechtel
- When you name your daughter after the sweetest person in your life 💗 this cutie pie is going to do amazing things #blessed #babygirl.
- Can’t wait to celebrate this bday boozin’ with my crew. Group singing tequila shots are the best thing ever!
- So much to celebrate, so much to look forward to. 🎂🎉
- Throwback to that time when my big brother decided to get mad at me for putting peanut butter in his hair 🍪👦🏼☕️. Happy 21st birthday @xxxxxxx !!! Love you to pieces.
- This year you’re celebrating your 21st birthday—how amazing! You can do anything you put your mind to and celebrate here’s to making it the best year yet. We love you and hope that this year is great.
- “I’m about to turn 21. I am finally legal, I can vote and get married, so yay!” –Taylor Swift
- I have a #brunch date with my bestie on your birthday and you’re paying. Hope you have a great one!
- A bunch of candles, a little cake, and all my best friends. Happy 21st to me! #HBD
- I woke up on my 21st birthday… I got older.
- Wishing you a year of cheers to come. 🎉 Hey there, #21.
- Being 21 has never felt better 🎉 # :gun:
- 🎂🎁 Welcome to the #Adulting club. Now let’s get you a latte ☕️
- My most favourite thing#5: Be inspired by Lincoln’s #quotes and celebrate his bday on # February 12th. Happy #PresidentLincolnsBDay!
- Taken for my 21st birthday @xxxxxx #birthday #21 #happybirthday #teamblackandblue *
- Happy 21st birthday to the sweetest girl I know. My world would be nothing without you in it. Love you always, Mommy.
- Here’s to you turning 21 and ALL of the fun you’ll be having this weekend! Enjoy!
- Let the good times roll 🎉 – Taylor Swift #taylorswift21stbirthday.
- I hope you get exactly what you want and more. Happy Birthday! #21 #HappyBirthday
- Happy Birthday to my shining star. May every morning start with you! Here’s to you, sweetheart!🥂 #birthdayboy #oldman #big21 #21st #21 ##
- Smile! It’s your birthday.
- 🎂 Today is your day 🎂 ✨
- #21stbirthday #21stbirthdayphrases #birthdaywishes #happybirthdaywishes #happybirthdayquotes #happybirthday #21stbday #21stbdayphrases
- #21stbirthday #birthdaywishes #birthdaytreats #21st #21 #happybirthday #cake #celebrate #celebratelife #birthdaygirl #funnybirthdayquotes
- #birthday #birthdayquotes #happybirthday #21 #21stbirthday #21st #birthdaycakes #instacake #cakes #cakeday
- #21stbirthday #funny #bday #instagram #instamood #instagrammer #happymemes #photooftheday #birthdayboy #birthdaygirl #birthdaycake
- #birthday #birthdaygirl #happybirthday #instafun #21stbirthday #birthdaygirl #happy #celebration #celebrate #party #picoftheday #instapic #photooftheday #pictureoftheday
- #happybirthday #happybirthdaytome #21 #21stbirthday #turning21 #21yearsold #happy21stbirthdaytome
- #21stbirthday #bday #birthdaygirl #birthdayboy #happybirthday #celebrate #celebratinglife #birthdaycake #yummycake #cakedecoratingideas #funfetti #decoratingcakes #wishesforabirthdaygirl #wishes
- #birthday #anniversary #21stbirthday #21stbirthdaycaptions #happybirthday #throwbackthursday #tbt
- #happybirthday #21yearsold #21stbirthday #birthdaygirl #birthdayboy #bffs #friends #friendshipquotes #bffgoals #bestfriendsforever #instagramcaptionsforfriends #instagramcaptionsforboysandgirls #champagnequotes
- #birthday #instagram #birthdayboy #happybirthday #hbd #bday #21stbirthday #instaboy #21stbdayboy
- #birthday #21stbirthday #funnybirthdaywishes #funny #happybirthday #happybirthdaycaptions #wishesforalovedone #quotesforlife #happybirthdaytoyou #birthdaygirl #cheers #friendsforever #partytime ##bff
- #birthday #21stbirthday #birthdayquotes #girls #birthdaygirl #instadaily #instagramhub #bumblebee #pinkfloyd
