Captain Underpants Costume
Tra-la-laaa! Bring the beloved scholastic superhero to life.
Captain Underpants is the hilarious, hypno-induced superhero alter ego of Principal Benjamin Krupp from Dav Pilkey's bestselling book series. Popular for school book weeks and Halloween, this costume is instantly recognizable by its minimalist superhero attire. The look consists of a skin-toned base, giant white briefs, a red polka-dot cape, and a bald head.
- Difficulty
- Easy
- Time
- ~20 min
- Budget
- $20–50
Try it on
See yourself as Captain Underpants
One clear photo of yourself; we render you in this costume — face untouched, full body, about 20 seconds.
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What you need for a Captain Underpants costume
Short on time? Buy it ready-made
Spirit Halloween sells the complete Captain Underpants costume — one box instead of 5 pieces.
Skin-toned bodysuit
A long-sleeve, full-body spandex suit in a beige or tan shade to mimic bare skin.
DIY: Wear a matching beige long-sleeve shirt and leggings.
Oversized white briefs
Classic white cotton briefs, purchased a few sizes too large to fit comfortably over the bodysuit.
Red polka-dot cape
A simple red cape featuring black polka dots, tied or pinned at the collar.
DIY: Cut a piece of red fabric and draw black circles on it with a thick black permanent marker.
Bald cap
A flesh-colored latex bald cap to cover all hair.
Polyester stuffing
Polyester fiberfill or a small flat pillow to create a rounded belly shape.
DIY: Tuck a small, soft travel pillow under the front of the bodysuit.
Rather not assemble it? See ready-made Captain Underpants costumes at Spirit Halloween ↗
How to put it together
- 1
Put on the skin-toned bodysuit or matching beige shirt and leggings as your base layer.
- 2
If using stuffing, place a small pillow or polyester fiberfill under the front of the bodysuit to create a round, cartoonish belly.
- 3
Pull the oversized white briefs over the bodysuit, positioning them high on the waist.
- 4
Tie or safety-pin the red polka-dot cape around your neck so it drapes over your shoulders.
- 5
Apply the bald cap over your hair, securing the edges with spirit gum or tucking them neatly under the collar of the bodysuit.
- 6
Strike the classic hands-on-hips superhero pose and shout 'Tra-la-laaa!'
Makeup & hair
Use a bald cap to cover all hair. No makeup is required, but you can use a touch of skin-colored makeup to blend the edges of the bald cap at the forehead.
Captain Underpants for couples, groups, kids & more
- couples
- Pair with George Beard or Harold Hutchins wearing their signature school clothes.
- group
- Go as a trio with George, Harold, and Professor Poopypants.
- kids
- Use a thick, flesh-colored thermal set instead of a thin bodysuit for warmth and comfort.
- Plus size
- An inflatable Captain Underpants costume is a comfortable, one-piece alternative that fits many sizes.
- pet
- A simple red cape and white dog-sized briefs make an easy pet version.
Tips
- Wear neutral-colored slip-on shoes or go barefoot for photos to match the character's bare feet.
- If using a bald cap, secure your hair flat with gel or a hairnet beforehand for a smooth look.
- Use fabric markers to draw black polka dots on a plain red cape if you cannot find a pre-made polka-dot cape.
Captain Underpants costume FAQ
- What does Captain Underpants wear?
- He wears only a pair of large white briefs and a red cape with black polka dots, over his bare, bald body.
- How do you make a Captain Underpants costume warm for kids?
- Use a thick, skin-toned thermal undershirt and leggings as the base layer instead of a thin bodysuit.
- How do you make the cape?
- Cut a piece of red fabric, draw black polka dots on it with a permanent marker, and tie it around the neck.
Did you know? Captain Underpants first appeared in Dav Pilkey's 1997 novel, which went on to spawn a massive franchise including an animated movie and a Netflix series.