DIY Baby Halloween Costumes: 10 No-Sew Costume Ideas 

DIY Baby Halloween Costumes

Your little pumpkin's first Halloween is almost here, and you're probably feeling that familiar mix of excitement and mild panic! Whether you're holding a tiny newborn or chasing around an almost-toddler, you want to create something absolutely adorable without losing your sanity in the process. The good news? You don't need to be a Pinterest-perfect crafter to pull off amazing DIY baby Halloween costumes that will have everyone saying "aww!"

Don't get spooked, mama! You don't need a lot of money or a crafty hand to make your baby the star of the neighborhood this Halloween. With just some baby clothing basics and a few creative accessories, you can create baby Halloween costume ideas that are photo-worthy and incredibly simple to put together. These no-sew options mean you can skip the stress and focus on the fun. Take a peek inside baby's closet first—you might already have most of what you need! For anything missing, a quick trip to the dollar store or your favorite childrenswear store will do the trick. Plus, creating your own DIY infant Halloween costumes with a solid color Onesies® bodysuit as your base is more budget-friendly than most store-bought options and way more meaningful when you look back on these sweet memories years from now.

Simple and Adorable Baby Halloween Costume Ideas

Ready to dive into the cutest baby Halloween costume ideas that'll make your heart (and everyone else's) absolutely melt? Whether you're planning DIY Halloween costumes for newborns still in that sleepy, snuggly phase or creating something special for your more active little explorer, we have the perfect no-fuss options. Every single costume idea uses things you probably already have tucked away in drawers or can grab for just a few dollars—because let's be honest, babies grow so fast that spending a fortune on a costume they'll wear once just doesn't make sense!

Now, if you're dealing with a brand-new little one, you already know that DIY Halloween costumes for newborns need to be extra thoughtful. Those tiny humans have some pretty specific needs that regular costumes just don't consider. Your newborn's costume needs to work with their world—think ultra-soft fabrics that won't irritate delicate skin, designs that make those inevitable diaper changes a breeze, enough warmth for chilly October evenings, and simple enough that it won't disturb a peacefully sleeping baby (because we all know how precious that sleep is!).

DIY infant Halloween costumes coming up check all these boxes while still being absolutely adorable:

1. Tiny Farmer

You can have your very own "Farmer in the Dell" this Halloween! The DIY baby Halloween costume is a total win because your probably already have most of what you need hiding in your baby's dresser. Grab that trusty white Onesies® bodysuit, layer it under some adorable denim overalls, and pop on the tiniest straw hat you can find. Complete the look with a bandana bib. If your baby is old enough, you can pull them in a wagon or let them carry a plush farm animal like a horse or a pig.

Many baby stores have novelty teethers that look like tomatoes or ears of corn. If you have the extra money in your budget, you can let your little one take their crops along with them. When the holiday is over and done with, you’ll have a fun new toy for baby to play with.

2. Baby Witch

There is nothing cuter than a little witchy poo! It’s also one of the easiest DIY baby girl Halloween costumes. Grab a black dress from baby’s closet or purchase one on sale from a clothing store. Pair it with purple and black striped leggings. If it’s chilly outside, you can add a black long-sleeved bodysuit underneath. Long-sleeved onesies like Onesies® Brand bodysuits are perfect for costumes like the baby witch because they’re comfortable and layer well with other pieces.

Finish the outfit with the witch’s most important accessories—black patent leather dress shoes or black ballet shoes, a pointy hat and a little broom. If you’d like, you can swap the broom out for a tiny cauldron. It’s not only a fun conversation starter, it’s a great reservoir for holding candy while trick or treating!

3. Little Lumberjack

Your little boy will look handsome and strong in his Little Lumberjack costume. This DIY baby Halloween costume is especially perfect for families who have their babies in crisp fall temperatures. Start with a black or red bodysuit and then layer a long-sleeved flannel shirt on top of it. For the bottoms, add a pair of baby jeans with a comfy elastic waist. The shoes can either be infant boots or tan booties. And for a final touch, add a baby cap to complete the costume (and keep baby cozy).

Some clever moms and dads like to include a fake beard made of yarn or cloth, but the costume still stands on its own without it. And since flannels and jeans are a wardrobe staple for many parents too, you can easily get the whole family in on the matching action without have to buy an expensive Halloween costume. Now that's what we call a budget-friendly family costume win!

4. Young NFL Fan

By the time Halloween rolls around, football season is in high gear. Your little one will be in the running for costume winner when they debut in their football fan ensemble. This is a genius baby Halloween costume idea because many parents already plan on buying NFL baby apparel in support of their favorite team, which makes it a no-brainer costume idea. Start with a bodysuit, cap and pants set and get double duty by using it for Halloween celebrations and game day fun!

When your baby is decked out in apparel with your favorite team’s colors, logo and mascot, you really don’t need to include anything else. Let’s face it, though—when it comes to costumes, moms love accessories! Let your baby hold a soft football or football teether as they take in the Halloween festivities. While they’ll be entertained, you’ll be complimented for your creativity.

5. Mini Princess

If your little girl looks adorable in pink, (and of course she does!) let her be a princess for a day. This DIY baby Halloween costume is pure magic. Infants always look precious in tutus and interestingly enough, they seem to really like how one feels between their fingers. All you need is a small, pink tutu, a pink bodysuit and, if you’d like, a set of matching leggings.

Finish it with comfy ballet slippers and then add a sparkly princess crown or delicate flower crown for that perfect royal touch. You can also add a princess crown or a crown of flowers. This costume only takes few minutes to pull together, but still looks absolutely adorable. But be careful, she may want to dress like a princess all the time after wearing this outfit!

6. Spa Baby

Does your little one need some serious chill time? They're ready to be the most relaxed Spa Baby this Halloween! This baby Halloween costume idea is guaranteed to turn heads, yet it's incredibly simple to pull together. Start with a basic white Onesies® bodysuit First, dress baby in a basic white short-sleeved or long-sleeved bodysuit. Next, wrap them in an extra plush white bath robe. Place soft white slippers on their feet and give them a small terry cloth burp cloth to hold as their bath towel.

If your baby is a little older, you may be able to get them to wrap them in a hooded towel or plush, comfy robe, if it’s even just for pictures. Parents of newborns can place their baby in a soft lounger to make it look like they’re relaxing and waiting for their next spa treatment. If you’re a big social sharer—or want photos for your scrapbook—you can bring a few cucumber pieces with you to where you plan to take pictures. Place them next to baby on a light backdrop, which will really make it look like they’re in the middle of a Zen moment.

7. Little Gym Rat

Some little guys and girls are just born to get pumped up! This DIY baby Halloween costume is fun and incredibly easy to assemble. Start with a Onesies® bodysuit in your favorite color—think uplifting hues like violet, pink or blue. Add some sweatpants, comfy shorts, or leggings, depending on the weather. And if you want to totally nail that throwback '80's gym vibe add some tiny leg warmers are optional but encouraged for maximum cuteness!

Let your little athlete go barefooot for that authentic gym feel, or pop on some socks with tennis shoes if you're heading outdoors. Complete the look with a bright sweatband that'll have everyone smiling. If it's chilly outside, layer a jacket or hoodie on top. For the perfect finishing touch, grab a plush toy or teether shaped like a dumbbell and your tiny gym rat will love having their own "equipment" to show off!

8. Pint-Sized Construction Worker

Time to pay homage to all those hardworking folks with this adorable construction worker costume! The best part? You really only need four simple pieces to nail this DIY baby Halloween costume. Start with a classic white baby Onesies® bodysuits, a pair of baby jeans and a yellow hard hat. A plastic yellow hat found at a dollar store or party store will also do. For shoes, you’ll need tan booties, baby boots or sneakers.

Got an orange or yellow vest hanging around? It makes and excellent safety vest layered over their outfit. Tiny toy hammers and wrenches are fantastic accessories that'll have everyone cooing over your little builder. Here's a fun idea: ask Dad if he wants to join the crew! He only needs his white shirt, jeans, boots and a construction hat from the party store. A tool belt adds the perfect finishing touch.

Just remember, while you're having fun getting ready, safety first! Double-check that baby can't reach anything potentially dangerous in that tool belt.

9. Baby Bear

If you love animal costumes, you will adore dressing your baby up as the cutest little bear! While you could drop some serious cash on fancy bear outfits online, this DIY baby Halloween costume is budget-friendly and ridiculously adorable. Start with a brown or black bodysuit, either long or short sleeves depending on the weather forecast. Here's a clever trick: look for Onesies® bodysuits with built-in mitten cuffs, then simply attach brown or black gloves over the cuffs for instant bear paws. Layer on a soft brown or black hoodie or jacket for that perfect furry look, then add leggings or pants. Finish with booties or soft shoes to complete those adorable bear "feet."

Gerber Childrenswear has baby rompers, caps and outfits with little ears attached, which makes this costume super easy to pull off! This makes for the perfect way to keep baby warm and complete the look. Fair warning: this costume might need a bit more advanced planning than others since you'll want to track down a bear headband from a party store. These are usually easy to find, but make sure to look ahead. And while you're looking, you may find some specialty bear pieces to round out this look.

10. Lil’ Granny/Gramps

These little granny and gramps costumes aren't just adorable, they're guaranteed to have everyone cracking up! This DIY infant Halloween costume works best for babies 9 months and up, who can handle a bit more dressing up and accessories without getting fussy. While it does require more pieces than some other costumes, it's become a total favorite among parents who go all-out for Halloween fun.

For your little granny, start with a long-sleeved dress, cozy leggings, and a matching cardigan or sweater. Add socks with ballet slippers or white tennis shoes for that authentic grandma vibe. Little gramps need gray or khaki pants, a crisp button-up shirt and suspenders for that distinguished look. Now, it's time to really add grandma or grandpa flair. Hunt down small plastic glasses without lenses, or if you're feeling crafty , carefully remove lenses from baby sunglasses before Halloween. Since your little one doesn't have gray hair yet, you'll need a white or gray wig.

Want a DIY approach? measure your child's head with a tape measure, then cut out white construction paper to that length. Tape the construction paper together to make a cylinder resembling a chef's hat. Tape the ends down so it looks like a small hat, and then place a towel inside so it holds its shape. Lastly, glue cotton balls all over it for instant "gray hair." Let it dry completely, and you have the most adorable little grandparent ready to steal the show!

Creating Adorable Halloween Costumes without the Fuss

If you have an imagination for Halloween, it’s easy to design a sweet and fun DIY baby Halloween costume for your child. As you see with these ideas, you already have more items on hand than you think. If baby is due to grow out of his or her clothes by the time the holiday rolls around, start thinking of what you need to buy and how you can transform it for the holiday.

Don’t forget to get into the spirit with your own costume. Even if you can’t match baby, a complementary outfit makes for amazing pictures. If your little one is a lumberjack, be a tree. If you dress him or her as a tiny farmer, you can be a farm animal. Whatever you choose, enjoy your baby’s first-ever dress up. Savor the memories—and take plenty of photos!