21 First Birthday Outfits Just as Special as Your Tot
Baby is turning one, which is a one-derful excuse to buy them a celebratory ensemble. A first birthday outfit cues everyone in that it’s their big day. Plus, it’ll make those cake smash photos even sweeter. The best first birthday outfits for boys and girls take full advantage of the latest trends—for Instagram, yes, but also for you to reminisce about down the road! Of course, they should also speak to the occasion, like the theme or formality of your child’s first birthday party. For ample first birthday outfit inspiration, keep on scrolling! We’ve made it easy to shop the cutest ideas on the market, from super-sweet Minnie Mouse and Mickey Mouse first birthday outfits to an ultra-trendy unicorn first birthday outfit.
In this article:
First birthday outfits for boys
First birthday outfits for girls
These baby boy first birthday outfits pay tribute to the most popular boys’ first birthday party themes. (Plenty of them are also unisex!) Whether you’re looking for something funny or formal, we’ve found cute clothing for your soon-to-be toddler.
Mickey Mouse First Birthday Outfit
Mickey Mouse may just be the ultimate emblem of family fun, so this Mickey Mouse first birthday outfit will definitely set the right tone for baby’s party. And how cute is that faux vest and tie design?
Buy it: Disney Baby Boys’ Mickey My First Birthday Creeper, $20, Amazon.com
Dressy First Birthday Outfit
Here’s a more versatile (and dressy) option your little one can wear well beyond their birthday. The set comes with a fancy patterned button-down, colorful pants and striped suspenders. Because there’s nothing quite like a baby in suspenders.
Buy it: Cat & Jack Baby Boys’ Poplin Top and Twill Pants Set, $16, Target.com
Dinosaur First Birthday Outfit
This dinosaur first birthday outfit is bound to cause an up-roar of giggles and smiles. The “one-a-saurus” onesie pairs perfectly with the prehistoric-patterned pants.
Buy it: Averylee Baby Dinosaur Baby Boys First Birthday Outfit, starting from $32 for a bodysuit and shorts, Etsy.com
Lumberjack First Birthday Outfit
We don’t know what it is about a baby in rustic plaid, but lumberjack-inspired first birthday outfits are an ever-popular choice! This buffalo check “one” bodysuit (and coordinating jeans with plaid patches) makes an excellent ensemble for a fall or winter birthday.
Buy it: Cuddle Sleep Dream Baby Boy 1st Birthday Outfit, $44 for a bodysuit and jeans, Etsy.com
Monster First Birthday Outfit
Pay tribute to your lovable “little monster” with this sweet, quirky first birthday bodysuit. It comes with either short or long sleeves depending on the season. Plus, you can get it personalized with baby’s name.
Buy it: SKK Design Baby Monster Boy First Birthday Outfit, starting from $17, Etsy.com
Twin First Birthday Outfits
Shopping for two? You can’t go wrong with matching twin first birthday outfits. These fun, fishing-inspired “the big one” bodysuits will reel in compliments.
Buy it: SKK Design Baby Twin Boy First Birthday Outfits, starting from $32 for 2 matching bodysuits, Etsy.com
Unique First Birthday Outfit
This “one-der boy” tee shirt and graphic pants set was made for cool kids.
Buy it: Me and Reekie One Der Boy 1st Birthday Shirt, $32, Etsy.com; Me and Reekie One 1st Birthday Shorts or Pants, starting from $32, Etsy.com
Simple First Birthday Outfit
Get this sporty, soft gray romper printed with baby’s name and the number one on the back jersey-style.
Buy it: 2 Trouble Boys 1st Birthday Romper, $33 for the front and back printed, Etsy.com
Whimsical First Birthday Outfit
Outfit your “wild one” in this Where the Wild Things Are-inspired bodysuit. It’s printed with the number one, a crown bearing baby’s name and the festive phrase “let the wild rumpus start.”
Buy it: 2 Trouble Boys Wild One 1st Birthday Outfit, $30 with baby’s name, Etsy.com
Dapper First Birthday Outfit
This tiny “tuxedo” is as cute as they come and also suits the special occasion.
Buy it: Fairy Baby Boy Gentleman Outfit Formal Romper, starting from $17, Amazon.com
Looking for dresses, tutus and headbands? We’ve found plenty, plus other adorable details that’ll steal your heart. There’s something for all the cutest first birthday party themes, as well as some formal, wear-again options we love.
Minnie Mouse First Birthday Outfit
Disney lovers, this one’s for you—especially if a birthday trip to the Magic Kingdom is in the works! The Minnie Mouse-inspired ensemble comes with a sparkly gold bodysuit, a fun pink tutu and, naturally, a headband complete with bow-adorned mouse ears. Get it customized with your child’s name for an extra-special touch.
Buy it: My TuTu Cute Boutique Personalized Pink and Gold Minnie Mouse First Birthday Outfit, starting from $47 for the 3-piece set, Etsy.com
Unicorn First Birthday Outfit
Celebrate your little miracle with the mystical creature that symbolizes miracles: the unicorn! This first birthday tutu outfit is adorably enchanting.
Buy it: Popatu One Unicorn Tutu Bodysuit, $28, Nordstrom.com
Mermaid First Birthday Outfit
Or, go all out with this equally magical mermaid first birthday outfit. With its seashell sequin bodice and scaly patterned bottom, this romper is just “extra” enough for your little drama queen.
Buy it: Peanut and Tot Mermaid First Birthday Outfit, starting from $31, Etsy.com
My First Birthday Outfit
Baby’s only one once, so shout it from the rooftops! This sparkly “one” first birthday tutu outfit will surely make them the center of attention. That’s in part because it comes with a fancy matching headband!
Buy it: Baby Aspen My First Birthday Bodysuit, Tutu and Head Wrap Set, $40, Nordstrom.com
Princess First Birthday Outfit
Treat your newly minted tot like royalty with this pink and gold princess first birthday outfit. The baby bodysuit features a crowned number one; the set also includes a playful polka dot tutu.
Buy it: Fun Munchkin 1st Birthday Girl Outfit, starting from $30 for a top and tutu, Etsy.com
Donut First Birthday Outfit
You donut know how much we love trendy donut-inspired designs. This baby first birthday outfit set includes a “one” onesie (the “o” being a donut), a donut-patterned skirt and a coordinating headband.
Buy it: Peanut and Tot Donut Girls First Birthday Outfit, $50 for the 3-piece set, Etsy.com
Floral First Birthday Outfit
Not into graphic tees and baby bodysuits? Not a problem. For a more formal birthday bash, try this pretty floral dress.
Buy it: Frais Embroidered Mesh Dress, $34, Nordstrom.com
Punny First Birthday Outfit
Celebrating in the summer? How about this ultra-adorable “one in a melon” watermelon-inspired first birthday outfit? We’re always here for a good pun, not to mention an uber-cute design.
Buy it: My Little Bow Peeps Shop One in a Melon Outfit, starting from $18, Etsy.com
Romper First Birthday Outfit
We’re thoroughly obsessed with this fashion-forward “one” romper. It’s got the sweetest ruffle details.
Buy it: MK’s Boutique Yellow Baby Girl First Birthday Outfit, $35, Etsy.com
Fancy First Birthday Outfit
Here’s another pick for parents looking for a formal first birthday outfit. The party dress is finished off with an elegant silver bow.
Buy it: Bonnie Baby Girls Short Sleeve Jacquard Party Dress, starting from $16, Amazon.com
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