Deceptively Easy Baby Costumes Made with a Onesie

cute "where's Waldo" baby halloween costume Ashley Johnston via Instagram

This genius Halloween costume hack can go in so many directions

Elaborate costumes aren’t always comfortable for the tiniest of tots, so choosing a baby Halloween costume that is no-fuss yet still adorable is the way to go. Get inspired by these baby costumes that center around what your newborn is the happiest wearing—a onesie! From a sweet strawberry to a little loofah, these simple do-it-yourself costumes will have your baby Halloween-ready in no time.

Magic 8 Ball

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Your baby is magic and so is this witty costume idea from And We Play. Start with a black onesie. Get the template designs for the “8” and the answer “outlook not good” here and strategically place the answer over the diaper area on your baby’s back. It’s, easy, comfy, and clever all in one!

Pineapple Baby Halloween Costume

Your baby deserves a crown! A pineapple one, of course. Use this no-sew costume from Lines Across as inspiration and here’s the good news: The crown headband is easier to make than it looks—it starts with a cereal box!

Scuba Diver Baby

A black onesie gets transformed into a wetsuit in this easy-to-assemble scuba diver baby costume. Bonus: the accessories like swim goggles, a water or soda bottle, and a pacifier are all things you probably have on hand.


Pull off this sweet strawberry costume in no time. All you need is a long sleeve red onesie, green hat and felt. If you’re itching for an even craftier challenge, check out these slightly more complex (but still onesie-based) costumes by Morgan at Charleston Craft.

Loofah Baby Halloween Costume

Bath time is the best time! With just tulle, rope, and a needle and thread, Home of the Harvey’s shows how to make a baby loofah costume in less than an hour while only spending $8. Be sure to size up the onesie for this easy DIY.

’80s Workout Instructor

Get your heart rate pumping ’80s lovers—this costume’s for you! Just grab a onesie, leg warmers, and a headband, and this bodacious baby costume comes to life in record time. For all the details and prop ideas, visit Coco’s Caravan.

Lifeguard Baby Halloween Costume

baby Halloween costume

Our friends at Primary, who make our favorite baby bodysuits, have shared a bunch of clever costume ideas and simple instructions on how to make them. We love this cute lifeguard baby costume (pictured above)and its quick, no-sew directions. Here are some of our other faves:

Find LOTS more Halloween costume inspiration and DIY instructions at

Pillsbury Doughboy

Here’s a poppin’ fresh idea the whole neighborhood will love. All you need for this DIY Pillsbury doughboy costume is a long sleeve white onesie, white pants, and a chef’s hat. Then, use any piece of white fabric to make a simple scarf, print the Pillsbury logo, and glue it onto your little one’s hat. Baking skills not included!

Ketchup Bottle

Complete this adorable baby costume in no time with a red premium Onesie bodysuit, white peel & stick felt, stick-on letters, a green ribbon, and fabric glue. Looking for another costume for a sibling or friend? Relish the spirit of Halloween with a coordinating costume using a green onesie to make everyone’s favorite pickled condiment.

Baby Deer

This darling deer costume keeps your little fawn comfy and your workload light. Whether you choose to DIY your antlers or make it extra easy and purchase a headband from Little Bug’s Pretties via Etsy, this Halloween inspo from El Paso blogger Jeannie is hard to resist.


If you can sew or use a hot glue gun, you can make this football costume. It’s perfect for sports fans or if you have an older sibling dressing up as a football player. Head to Lines Across for the instructions. Then, your babe can wear it again on Super Bowl Sunday.

Where’s Waldo

In a chilly climate, you’ll appreciate the hat on this easy-to-identify baby Halloween costume. All you’ll need is a red-and-white-striped onesie (or cover a white onesie with red felt strips) and red-and-white fleece for the hat. Add jeans and round glasses (if you can’t find any, search for Harry Potter glasses at online retailers), and you’re all set. Make It & Love It has the tutorial.

Pac-Man Baby Halloween Costume


Calling all gamers! Start with a black onesie and glue on cut-out felt pieces of Pac-Man and dots. In more of an add-to-cart mood? Head to Etsy and pick up a readymade version from Linda Summer Designs or this adorable set from The Baby Odds shop.



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