Mustard Costume
A classic, crowd-pleasing condiment look that is easy to wear.
The Mustard costume is a beloved Halloween classic, prized for its humor, simplicity, and instant recognizability. Whether you go with a structured foam bottle tunic or a quick DIY yellow outfit, it is a lighthearted choice that works for any party. It is most famous as half of a classic Ketchup and Mustard couples pairing.
- Difficulty
- Easy
- Time
- ~15 min
- Budget
- $15–45
Try it on
See yourself as Mustard
One clear photo of yourself; we render you in this costume — face untouched, full body, about 20 seconds.
One render, $1. No account needed — if it fails you're not charged. Pricing.
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Want a different costume on this photo, or a whole group in costume? Open the Try-On Studio.
What you need for a Mustard costume
Short on time? Buy it ready-made
Spirit Halloween sells the complete Mustard costume — one box instead of 4 pieces.
Yellow bottle tunic
A bright yellow, sleeveless foam tunic shaped like a squeeze bottle with 'Mustard' printed on the front.
DIY: Wear a bright yellow t-shirt or sweatshirt and use fabric paint or felt to write 'MUSTARD' vertically down the front.
Pointed cone hat
A matching yellow cone-shaped hat that mimics the nozzle of a squeeze bottle.
DIY: Roll a piece of yellow poster board into a cone shape, staple it, and attach an elastic chin strap.
Undershirt and pants
Neutral black or matching yellow long-sleeve shirt and pants to wear underneath the tunic.
DIY: Use any plain black or yellow clothes already in your closet.
Yellow sneakers
Simple yellow or black canvas sneakers to keep the color scheme consistent.
DIY: Wear plain black shoes you already own.
Rather not assemble it? See ready-made Mustard costumes at Spirit Halloween ↗
How to put it together
- 1
Put on your base layer of neutral black or matching yellow pants and a long-sleeve shirt.
- 2
Slip the yellow foam Mustard bottle tunic over your head, aligning your arms through the side armholes.
- 3
Adjust the tunic so it hangs straight and the printed 'Mustard' logo faces directly forward.
- 4
Place the yellow cone hat on your head, securing the elastic strap comfortably under your chin.
- 5
Lace up your yellow or black sneakers to complete the color-coordinated look.
Makeup & hair
Keep hair simple or tucked under the cone hat. No special makeup is required, but you can add yellow face paint cheeks for a festive touch.
Mustard for couples, groups, kids & more
- couples
- Pair up with a partner dressed as a red Ketchup bottle for the ultimate classic food duo.
- group
- Add Hot Dog, Relish, and Hamburger costumes to create a full backyard barbecue group theme.
- kids
- Available in simple youth-sized yellow tunics or easy DIY yellow t-shirts with matching felt hats.
- Plus size
- The loose, open-sided design of foam tunics makes this style highly accommodating for all body types.
- pet
- A small yellow t-shirt for dogs with 'Mustard' written on the side in fabric paint.
Tips
- Wear lightweight layers underneath the foam tunic, as polyester foam can trap body heat indoors.
- If your foam tunic arrives creased, steam it gently or hang it in a warm bathroom to smooth out the wrinkles.
- Ensure your base layer pants have pockets, as most novelty tunics do not have built-in pocket access.
- Keep your arms free to hold drinks or snacks easily by choosing a tunic with wide armholes.
Mustard costume FAQ
- What do you wear under a Mustard bottle costume?
- It is best to wear plain black or matching bright yellow long-sleeve shirts and pants to keep the focus on the yellow bottle.
- How do you make a DIY Mustard costume?
- Wear an all-yellow outfit, write 'Mustard' on the chest with black fabric paint, and make a pointed cone hat out of yellow poster board.
- Is the Mustard costume comfortable for walking around?
- Yes, because it is a sleeveless tunic, it allows for full leg and arm movement, making it very comfortable for parties or trick-or-treating.
Did you know? The classic yellow mustard we drizzle on hot dogs today was first introduced to the public at the St. Louis World's Fair in 1904.