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What Should My Baby Be for Halloween? 5 Easy DIY Baby Costumes

Quick answer: Fuzzy Monster (15 min, 1 pastel fuzzy sweatsuit), Pocket Plush Monster (25 min, fuzzy one-piece pajamas or sweatsuit), and Bumble Bee (20 min, black sweatshirt and sweatpants): all built around the baby's comfort. Tap any name for its full build guide: materials list, numbered steps, and safety notes.

Updated September 2026

Every build is comfort-first: no face coverings, no itchy seams, no sewing. All under 30 minutes.

Find a baby costume in 60 seconds

Two questions. Every answer maps to a real no-sew baby pick.

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1. The two true baby guides

Written for babies from the start: soft bases, nothing on the face.

If: You want the costume that survives the meltdown

The pick: Baby Dinosaur

Green hoodie, felt spikes down the back, stuffed tail. Twenty minutes, no sewing.

Real numbers: 20 min - Easy

Build this costume → Read the full step-by-step guide

If: It is baby's first Halloween

The pick: Baby Pumpkin

An orange onesie and green felt leaves. Twenty minutes, no sewing.

Real numbers: 20 min - Easy

Build this costume → Read the full step-by-step guide

2. Sized down from the kid guides

These read baby-perfect on a onesie or footed sleeper instead of the kid-size base.

If: The baby runs warm and cozy

The pick: Fuzzy Monster

A pastel fuzzy footed sleeper with giant googly eyes and an oversized stitched smile. Fifteen minutes, no sewing.

Real numbers: 15 min - Easy

Build this costume → Read the full step-by-step guide

If: You have 15 minutes and a paper bag

The pick: Little Baker

A paper chef hat and an apron tied over a onesie. Fifteen minutes, no sewing.

Real numbers: 15 min - Easy

Build this costume → Read the full step-by-step guide

If: You are trick-or-treating after dark

The pick: Glow Skeleton

Black footed sleeper with glow-in-the-dark bone tape and glow bracelets. Twenty minutes, no sewing.

Real numbers: 20 min - Easy

Build this costume → Read the full step-by-step guide

Three more nap-time formulas

Not full guides: the whole formula for each, hot glue only, no sewing. Built on onesies you already own.

Formula: Sleepy owl

Brown footed sleeper. Hot-glue rows of felt feather scallops down the front, then glue two big sleepy eyes to the hood. Nothing on the face at all; the hood does the work.

Formula: Cotton-ball sheep

White onesie. Hot-glue cotton balls all over the torso, then glue two black felt ears to a soft headband. Skip the headband if they pull it off; the cotton-ball onesie reads sheep on its own.

Formula: Strawberry

Red onesie. Hot-glue a green felt leaf collar around the neck and dot yellow felt seeds across the front. The collar is the whole costume; the seeds take five minutes.

The full build: Baby Dinosaur

If Halloween is closer than you think, here is the whole build, word for word from the costume guide.

The pick: Baby Dinosaur

Real numbers: 20 min - Easy

You will need:

  1. Green hoodie, 1 (buy: clothing store, or use your own)
  2. 2 sheets green craft felt, 9x12 inches each (buy: craft store, construction paper works too)
  3. Pillow stuffing or 2 old socks (make: stuff from home)
  4. Safety pins, 6 to 8 (buy: dollar store)
  5. Masking tape, 1 roll
  6. Scissors, 1 pair
  1. Cut a paper triangle template first and test the size on the hoodie.
  2. Then cut 6 to 8 triangle spikes from the green craft felt with the scissors, spikes cut too small look lost on the back, so go palm-size.
  3. Tape the spikes in a row down the back of the green hoodie with the masking tape. Pin each spike from inside the hoodie with a safety pin.
  4. Stuff the old socks with the pillow stuffing and tape the open ends shut with the masking tape.
  5. Safety: pin everything from inside the green hoodie, so pin backs face the fabric and never the skin.
  6. Pin the stuffed tail to the back waistband of the green hoodie.
  7. Optional pro finish: cut two small white felt triangles and pin them to the hoodie cuffs as claws. Claws sell the dinosaur more than the spikes do.
Build this costume → Read the full step-by-step guide

Still deciding?

Still deciding? Run the full 2-minute quiz and let it narrow 169 ideas down to 3.

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Or start from what you already own: check what your closet can build. Browse all 169 costume guides.

FAQ

Are these really no-sew?

Yes. Every guide on this page was checked against its materials list and build steps: no sewing verbs, no needles, no machines. The builds use cutting, gluing, taping, pinning, and tying only. The three bonus formulas at the bottom are hot glue only.

What should the costume go over?

A onesie or footed sleeper they already own and like. Build on the base layer, not the baby: nothing new should touch their skin except what already does.

Is face paint safe for babies?

Skip it for babies. Every pick on this page reads clearly without paint. The Glow Skeleton guide adds a face paint step for older kids. Skip that step for babies.

How long will a nap-time build actually take?

The five guides run 15 to 20 minutes of hands-on time; the fuzzy monster needs time to dry after. Cut the felt during one nap, glue during the next.