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Happy First Birthday Captions for that First Big Milestone

That first birthday is definitely a special one, so when you have a bunch of great first birthday pics to share, we have gathered all the best first birthday captions for your next post. So if you’re looking for first birthday captions for Instagram, we have you covered.

Now go ahead and browse through to find your favorite one.

Happy First Birthday Captions

  • My one-derful birthday baby, I hope you’re always as happy as you are on this momentous day.
  • Let them eat cake! And let them stay little.
  • You may not remember today, but I’ll never forget it.
  • Say hello to the world’s latest one year old.
  • If you can’t blow out the candles on your own cake, you might as well smash it.
  • I had no idea how much love and happiness could be packed into a single year, until this past one as your mama.
  • You’re the one getting all the presents today, but you’re the greatest gift I could ever ask for.
  • Dim-sum body say it’s your first birthday?
  • It’s fun to be one, but then again, every day with you is the best day ever.
  • Happy birthday to my baby, who does not even know it’s his birthday and cried all day.
  • Today and every day, I love you more than you could ever possibly know.
  • It’s fun to be one, but then again, every day with you is the best day ever.
  • No gift can come close to what you, our little princess, has been giving us every day, for the past 365 days. Every day with you is a priceless present for us.
  • Well, little princess, your reign over the kingdom of our hearts has reached a full year!
  • Happy first birthday. You’re one in a melon.
  • Some only dream of birthday cake, and others bake it happen.
  • Here’s to the next year of early mornings, big feelings, and wiping butts.
Cake with happy first birthday captions for Instagram
  • Today is a great day cause it’s my first birthday!
  • A first birthday is the perfect excuse to try some cake.
  • Today and every day, I love you more than you could ever possibly know.
  • You know, they should really make Happy 1 Year Of Keeping Your Kid Alive hats for parents.
  • I’m wearing the smile my first birthday gave me.
  • We’ve celebrated your first smile, your first giggle, your first step, and now, we get to celebrate the biggest first of all — your very first birthday.
  • Twinkle, Twinkle little star, one-year-old is what you are.
  • Happy 1st birthday to our lovely son! Your sweet face and playful curiosity make every day.
  • To be fair, I want to eat all of my birthday cakes like this, too.
  • Celebrating your first is a piece of cake.
  • Your first taste of sugar became your first bath of sugar.
Cake with funny first birthday captions for boys
  • No matter how grown up you get, I’ll always think of you as my sweet little baby.
  • You’re our ONE and only (seriously, we’re never doing this again).
  • She’s sugar and spice and everything nice, but for today, mostly just sugar.
  • When you were born, I thought I couldn’t possibly love you any more than I did in that moment. But I was so wrong, because I’ve loved you more and more every single day since then.
  • Your first taste of sugar became your first bath of sugar.
  • I can’t believe we made it one whole year, and tonight I’m going for this glass of wine like you went for that cake.
  • Made it to 1 year old! I know. I’m as surprised as you are.
  • You were all I ever wanted, and I still can’t believe you are mine. I also still can’t believe how loud you are.
  • Doughnut crush my vibes on my first birthday.
  • On your very first birthday, I’m torn between wanting you to stay this little forever, and being so incredibly excited to see how you grow and change as you get older.
  • Have a grate first birthday. Hope that’s not too cheesy.
  • To be fair, I want to eat all of my birthday cakes like this, too.
  • They say the days are long and the years are short, and this first year has certainly gone by in the blink of an eye. Don’t grow up too fast, my love.
  • Sending you s’more first birthday wishes.
  • Of course, I don’t know how to act my age. I’ve never been this age before!
  • I didn’t choose this first birthday, this birthday chose me.
  • A first birthday is the perfect excuse to try some cake.
Cupcakes with first birthday Instagram captions for girls
  • Let’s taco ‘bout your first birthday.
  • Yeti or not, it’s your first birthday.
  • Fun fact: you don’t need all of your teeth to eat cake.
  • I had no idea how much love and happiness could be packed into a single year, until this past one as your mama.
  • Honestly, your birthday should be a holiday.
  • No matter how grown up you get, I’ll always think of you as my sweet little baby.
  • One year ago, you made me a mom. I’m not sure what I did to deserve the incredible honor of raising an angel like you, but I’m so glad that you’re mine.
  • He can’t say bath yet, so this is how he asked to play in the tub.

If you like these, you might also want to check out Birthday CaptionsBirthday WishesFriend Captions and our lists of 21st22nd23rd24th, 25th, 26th, 27th, 28th, 29th, 30th, 31st, 32nd, 33rd, 34th, 35th, 36th, 37th, 38th, 39th and 40th birthday captions.

Short Happy First Birthday Captions

  • Level up. #1
  • Cheers to 1!
  • Make a wish. #1
  • 1? Bring it on.
  • Say hello to my new favorite one year old.
  • Finished my first lap around the sun…
  • So this is 1.
  • One is oh so sweet.
  • Aged to perfection.
  • Now we start planning for 2!
  • It’s my first birthday and that’s the tea.
  • Go ahead, cake my day.
  • You are One-in-a-melon!
  • Say hello to my new favorite one year old.
  • You are a work of art!
  • Here’s to a soup-er first birthday!
Candle with short captions first birthday
  • Season 1, Episode 1.
  • You take the cake.
  • Time to par-tea!
  • Let them eat cake! And let them stay little.
  • We can’t wait for the next 364 days!
  • Oh ship, it’s your first!
  • Enjoying life, eating confetti cake.
  • Hugs, kisses, and 1st birthday wishes.
  • Big first birthday energy.
  • Hulk Smash? More like CAKE SMASH.
  • It took me one year to get this cute.
  • Stay in your birthday magic.
  • One is FUN!
  • I can’t keep calm, it’s my first birthday.
  • Today we eat CAKE!
  • Love, kisses, and first birthday wishes.
  • So you’re spaghetting older.
  • Nothing holds a candle to you.

So that is it for our list of Happy First Birthday Captions for Instagram. We hope you found the perfect one for you.

Now go share that first birthday photo!

Woman holding up a clear chunk of ice on the beach

About the Author

Laynni Locke

I am Laynni Locke, a Canadian writer, reader and traveller with a passion for sharing life’s moments on social media. Keeping friends and family in the loop of our lives though photos and videos has become an essential activity for most.

And it doesn’t matter if you are travelling, celebrating a special occasion or just appreciating day-to-day life, when you take that perfect photo you are going to need the perfect caption or quote before you share it. Which is why we started Routinely Shares, providing comprehensive lists of quotes and captions to cover every occasion, adventure or loved one.

With extensive experience as a travel writer, social media specialist and grant writer, I have made it my mission to curate the best and easiest to use lists for your next post.

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