How do I make a DIY shark costume?

Wear a gray hoodie, glue white felt triangles along the edge of the hood for teeth, and attach a gray cardboard dorsal fin to the back.

What should I wear under a shark costume?

Wear lightweight, breathable clothes like a t-shirt and leggings, as plush shark suits can trap heat quickly.

Is a shark costume comfortable for walking?

Yes, especially onesie styles, but ensure the tail doesn't drag on the ground to prevent tripping.

A lightweight shark fin harness or a soft hook-and-loop shark hoodie for dogs.

Skip the store: Use a gray oversized hoodie and matching gray sweatpants. Glue white felt triangles along the inner rim of a gray hoodie. Use any dark sweatpants or leggings already in your closet.

AI-generated example

Shark Costume

Make a splash with a classic, toothy ocean predator look.

The shark is a classic, universally recognized costume choice perfect for Halloween, Shark Week, or ocean-themed parties. People love it because it is incredibly comfortable, warm, and instantly recognizable. The look typically consists of a gray and white jumpsuit or tunic featuring a prominent dorsal fin, a toothy hood, and a tail.

Difficulty: Easy
Time: ~15 min
Budget: $20–60

See yourself as Shark →What you need Buy the Shark costume

Try it on

See yourself as Shark

One clear photo of yourself; we render you in this costume — face untouched, full body, about 20 seconds.

Choose or drop a photo of yourselfJPG · PNG · HEIC

One render, $1. No account needed — if it fails you're not charged. Pricing.

Your photo is sent to Google's Gemini API to make the render and isn't used for training. Renders are AI-generated and labelled.

Want a different costume on this photo, or a whole group in costume? Open the Try-On Studio.

Shark costume — Example look · AI-generated

You as Shark

Result

What you need for a Shark costume

Short on time? Buy it ready-made

Spirit Halloween sells the complete Shark costume — one box instead of 4 pieces.

Shop Shark at Spirit ↗

Gray shark jumpsuit
A plush, full-body gray jumpsuit with a white belly panel, an attached tail, and a dorsal fin on the back.
DIY: Use a gray oversized hoodie and matching gray sweatpants.
Amazon
Toothy shark hood
An attached or separate hood featuring soft white felt teeth lining the rim and black button eyes.
DIY: Glue white felt triangles along the inner rim of a gray hoodie.
Amazon
Dark base layers
A comfortable black or gray t-shirt and leggings to wear underneath the main suit.
DIY: Use any dark sweatpants or leggings already in your closet.
Amazon
Gray canvas sneakers
Simple, neutral footwear that blends in seamlessly with the bottom of the jumpsuit.
DIY: Any dark, neutral, or gray shoes you already own.
Amazon

Rather not assemble it? See ready-made Shark costumes at Spirit Halloween ↗

How to put it together

1
Put on comfortable, lightweight base layers like a t-shirt and leggings to prevent overheating.
2
Step into the legs of the shark jumpsuit and pull it up over your shoulders.
3
Zip or button up the front of the costume securely.
4
Pull the hood up over your head, ensuring the felt teeth sit comfortably just above your forehead.
5
Adjust the dorsal fin on your back to make sure it stands upright and isn't folded.
6
Put on your gray or black sneakers to complete the look.

Makeup & hair

Keep your hair tied back or flat so the shark hood fits comfortably. If you want to add makeup, a simple ocean-blue face paint design or a playful shark bite mark on the cheek works perfectly.

Shark for couples, groups, kids & more

couples: Pair up as a Shark and a Lifeguard, or a Shark and a Scuba Diver.
group: Gather a group to dress as a school of sharks, or recreate the iconic Baby Shark family.
kids: A cozy plush shark romper or a hooded fleece jacket is perfect for keeping warm while trick-or-treating.
Plus size: Look for oversized fleece shark onesies which offer a relaxed, comfortable, and stretchy fit.
pet: A lightweight shark fin harness or a soft hook-and-loop shark hoodie for dogs.

More ways people search for this costume

The most-searched variations of “Shark costume”, and how this look adapts to each.

Puppy shark costume: A lightweight shark fin harness or a soft hook-and-loop shark hoodie for dogs.
Diy shark costume: Skip the store: Use a gray oversized hoodie and matching gray sweatpants. Glue white felt triangles along the inner rim of a gray hoodie. Use any dark sweatpants or leggings already in your closet.

Tips

Choose a lightweight tunic if you plan to wear it indoors, as full plush jumpsuits can get very warm.
If the dorsal fin is floppy, stuff it with a bit of tissue paper or bubble wrap to keep it standing upright.
Wear comfortable sneakers since the costume focuses on the upper body and torso.

Shark costume FAQ

How do I make a DIY shark costume?: Wear a gray hoodie, glue white felt triangles along the edge of the hood for teeth, and attach a gray cardboard dorsal fin to the back.
What should I wear under a shark costume?: Wear lightweight, breathable clothes like a t-shirt and leggings, as plush shark suits can trap heat quickly.
Is a shark costume comfortable for walking?: Yes, especially onesie styles, but ensure the tail doesn't drag on the ground to prevent tripping.

Did you know? The shark costume experienced a massive surge in pop-culture popularity after Katy Perry's 2015 Super Bowl halftime show featured the viral 'Left Shark'.