How do you make Alvin's 'A' on the hoodie?

Cut a capital 'A' out of yellow felt and attach it using fabric glue, double-sided fabric tape, or safety pins.

What pants should you wear with a chipmunk costume?

Since the chipmunks don't wear pants in the classic cartoons, wear neutral dark jeans, black leggings, or khaki pants to keep the focus on the colorful hoodies.

What accessories does Simon need?

Simon needs a blue hoodie and his signature round, black-rimmed glasses. You can also carry a book to emphasize his smart personality.

Alvin and the chipmunks diy costume

Skip the store: Use a plain sweatshirt you already own. Cut the letter 'A' from yellow paper or use yellow duct tape. Pop the lenses out of old sunglasses or twist black pipe cleaners into circles.

AI-generated example

Alvin and the Chipmunks Costume

Bring the musical chipmunk trio to life with simple, colorful hoodies.

Alvin and the Chipmunks is a classic group costume choice for friends, families, or couples who want a nostalgic, comfortable look. The outfits are instantly recognizable by their signature solid-colored hoodies, with Alvin wearing red, Simon in blue, and Theodore in green. It's a highly customizable, low-effort costume that works perfectly for all ages.

Difficulty: Easy
Time: ~20 min
Budget: $20–50

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Alvin and the Chipmunks costume — Example look · AI-generated

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What you need for a Alvin and the Chipmunks costume

Short on time? Buy it ready-made

Spirit Halloween sells the complete Alvin and the Chipmunks costume — one box instead of 5 pieces.

Shop Alvin and the Chipmunks at Spirit ↗

Oversized fleece hoodie
A solid-colored pullover hoodie in red (Alvin), royal blue (Simon), or kelly green (Theodore).
DIY: Use a plain sweatshirt you already own.
Amazon
Yellow felt fabric sheet
A single sheet of bright yellow felt to cut out Alvin's signature letter 'A'.
DIY: Cut the letter 'A' from yellow paper or use yellow duct tape.
Amazon
Red baseball cap
A plain, solid red adjustable baseball cap worn by Alvin.
Amazon
Round black glasses
Thick, round black plastic frames without lenses for Simon's signature look.
DIY: Pop the lenses out of old sunglasses or twist black pipe cleaners into circles.
Amazon
Chipmunk ears and tail set
A set containing brown plush clip-on ears and a small pin-on tail.
DIY: Cut ear shapes out of brown felt and attach them to a plain headband.
Amazon

Rather not assemble it? See ready-made Alvin and the Chipmunks costumes at Spirit Halloween ↗

How to put it together

1
Choose which chipmunk you want to be: Alvin (red), Simon (blue), or Theodore (green).
2
If you are Alvin, cut a large capital letter 'A' (about 8 to 10 inches tall) out of the yellow felt sheet.
3
Attach the yellow 'A' to the center chest of the red hoodie using fabric glue, double-sided fabric tape, or safety pins.
4
Put on the hoodie and pair it with simple dark jeans, leggings, or khaki pants.
5
If you are Alvin, put on the red baseball cap. If you are Simon, slide on the round black glasses.
6
Clip the plush chipmunk ears onto your hair or headband, and pin the tail to the back of your pants.

Makeup & hair

Keep your hair simple or tucked under Alvin's cap. Use a brown eyeliner pencil to draw a small, round chipmunk nose on the tip of your nose and add three small whisker dots on each cheek.

Alvin and the Chipmunks for couples, groups, kids & more

couples: Go as Alvin and Brittany (from the Chipettes) in matching red and pink outfits.
group: Gather two friends to complete the trio as Alvin, Simon, and Theodore.
kids: Perfect for toddlers; use cozy fleece onesies in red, blue, or green.
Plus size: Oversized hoodies offer a comfortable, relaxed fit for all body types.
pet: Dress your small dog in a tiny red sweater with a yellow 'A'.

More ways people search for this costume

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

Alvin and the chipmunks diy costume: Skip the store: Use a plain sweatshirt you already own. Cut the letter 'A' from yellow paper or use yellow duct tape. Pop the lenses out of old sunglasses or twist black pipe cleaners into circles.

Tips

If you are doing a group costume, coordinate your hoodie shades so they look cohesive together.
Use safety pins instead of fabric glue for the yellow 'A' if you want to reuse the red hoodie later.
Wear comfortable sneakers, as this is a highly active, walking-friendly costume.

Alvin and the Chipmunks costume FAQ

How do you make Alvin's 'A' on the hoodie?: Cut a capital 'A' out of yellow felt and attach it using fabric glue, double-sided fabric tape, or safety pins.
What pants should you wear with a chipmunk costume?: Since the chipmunks don't wear pants in the classic cartoons, wear neutral dark jeans, black leggings, or khaki pants to keep the focus on the colorful hoodies.
What accessories does Simon need?: Simon needs a blue hoodie and his signature round, black-rimmed glasses. You can also carry a book to emphasize his smart personality.

Did you know? Alvin and the Chipmunks first debuted as a novelty record in 1958 under the name 'David Seville and the Chipmunks'.