How do you make a DIY Sulley costume?

Start with a plain turquoise fleece onesie. Cut a large oval out of light blue felt for the belly and organic circles out of purple felt for the spots, then fabric-glue them onto the onesie. Craft horns out of stuffed grey felt and sew them onto the hood.

What is the best way to style a Sulley group costume?

The ultimate pairing is Sulley and Mike Wazowski, but adding a toddler dressed as Boo in her purple scaly monster suit makes it a perfect family or group theme.

Is a Sulley costume comfortable for walking outdoors?

Yes, especially in colder weather, as the plush fleece or faux fur acts like a warm blanket. Just wear comfortable sneakers underneath.

AI-generated example

Sulley Costume

Bring the lovable, furry blue giant of Monstropolis to life.

James P. Sullivan, better known as Sulley, is the giant, kind-hearted top scarer from Disney and Pixar's Monsters, Inc [1.2.5]. People love dressing up as him for his cozy, instantly recognizable look and friendly giant appeal. The costume centers around a vibrant turquoise faux-fur body covered in purple spots, complete with curved horns and a long tail.

Difficulty: Easy
Time: ~15 min
Budget: $30–100

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

Try it on

See yourself as Sulley

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.

Sulley costume — Example look · AI-generated

You as Sulley

Result

What you need for a Sulley costume

Short on time? Buy it ready-made

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

Shop Sulley at Spirit ↗

Turquoise furry jumpsuit
A soft, bright turquoise or sky-blue faux-fur one-piece jumpsuit with a lighter blue belly panel [1.2.5].
DIY: Use a turquoise fleece onesie and fabric glue to attach a lighter blue felt oval to the chest.
Amazon
Purple felt spots
Circular and organic-shaped purple spots distributed across the back, arms, and legs.
DIY: Cut organic circle shapes out of purple felt and fabric glue them all over the blue jumpsuit.
Amazon
Stuffed monster tail
A long, turquoise furry tail with purple spikes or spots that attaches to the lower back.
DIY: Sew a tube of turquoise faux fur, stuff it with polyester fiberfill, add purple felt spikes, and safety pin it to your waist.
Amazon
Monster hood with horns
A matching turquoise hood featuring two curved, ribbed grey or light purple horns on top.
DIY: Attach two horns made of stuffed grey felt or painted foam to the hood of a blue sweatshirt.
Amazon

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

How to put it together

1
Put on your base layer of comfortable, lightweight clothing to stay cool under the heavy faux fur.
2
Step into the turquoise furry jumpsuit and pull it up over your shoulders [1.2.5].
3
Secure the back or front zipper closure of the jumpsuit completely.
4
Attach the stuffed tail to the lower back of the jumpsuit using the built-in hook-and-loop fastener or a safety pin.
5
Pull the hood over your head, ensuring the curved horns sit upright and centered.
6
Adjust the cuffs at your wrists and ankles, and step into comfortable blue or black sneakers.

Makeup & hair

Since the costume features a full hood, hair can be tucked away completely. If your face is visible, apply a touch of blue face paint to the tip of your nose to mimic a monster snout, or add subtle blue and purple face glitter for a festive touch.

Sulley for couples, groups, kids & more

couples: Pair up with Mike Wazowski in a green lime-shaped outfit or Celia Mae with snake hair.
group: Create a full Monsters, Inc. crew with Mike, Boo in her purple monster suit, and Randall.
kids: An incredibly popular choice for toddlers and babies using plush, warm zippered onesies.
Plus size: Fleece kigurumi-style union suits offer an oversized, comfortable, and highly forgiving fit.
pet: A simple blue dog sweater decorated with purple felt spots and a small hood with soft plush horns.

Tips

Faux fur can get very warm, so wear breathable cotton undergarments to prevent overheating.
If your tail is heavy, secure it with an extra safety pin from the inside to keep it from sagging.
Brush the faux fur with a wide-tooth comb before wearing to make it look extra fluffy and vibrant.

Sulley costume FAQ

How do you make a DIY Sulley costume?: Start with a plain turquoise fleece onesie. Cut a large oval out of light blue felt for the belly and organic circles out of purple felt for the spots, then fabric-glue them onto the onesie. Craft horns out of stuffed grey felt and sew them onto the hood.
What is the best way to style a Sulley group costume?: The ultimate pairing is Sulley and Mike Wazowski, but adding a toddler dressed as Boo in her purple scaly monster suit makes it a perfect family or group theme.
Is a Sulley costume comfortable for walking outdoors?: Yes, especially in colder weather, as the plush fleece or faux fur acts like a warm blanket. Just wear comfortable sneakers underneath.

Did you know? Sulley has precisely 2,320,413 individual hairs rendered on his body, which required groundbreaking new animation software when Monsters, Inc. was made in 2001.