Best Alvin and the Chipmunks Costumes: The Ultimate Guide
Alvin and the Chipmunks costumes are so fun and instantly recognizable with or without the furry nose.
They’re the perfect mix of fun, nostalgia, and musical entertainment and they make for a great costume.
Whether you’re a fan of Alvin’s red hoodie, Simon’s blue glasses, or Theodore’s adorable demeanor, there’s a Chipmunk look for everyone!
This is an obvious choice for an excellent Trio Halloween costume but you could also pull this off solo if you wanted.
Let’s dive into the best Alvin and the Chipmunks costume ideas that will have you singing “Christmas, Christmas time is here!” all night long.

Chipmunks Costume Ideas
- Create a fun and festive celebration with Alvin and the Chipmunks costumes, perfect for Halloween or any other costume party.
- Use bold colors and large initials to make a chipmunk trio costume that’s fun and easy.
- Pair colored shirts with matching colored socks and add black leggings and Converse shoes for a complete look.
- Add a red baseball cap to complete Alvin’s costume, and use iron-on transfer paper to get a large letter on the front of the shirt.

Character-Specific Costumes
Alvin Costume Options
- Use a red baseball cap and a bold red shirt with a letter “A” on the front to make Alvin’s iconic look. You could do a t-shirt or a red hoodie. Either will work.
- Add black leggings and Converse shoes. You also do jeans. Sometimes he’s picture wearing pants but a lot of times not!
- Use bobby pins to style your hair in Alvin’s signature messy look.
- Find Hanes shirts at any craft store and use iron-on transfer paper to get the letter on the front.
Simon Costumes
- Buy a bright green t-shirt or green hoodie as the base for Simon’s costume.
- Use a large letter “S” or complete Simon’s look.
- Wear jeans or black pants
Theodore Costumes
- Use a bright blue t-shirt or hoodie for Theodore’s look
- Add a matching blue hat and shoes (optional)
- Get a pair of oversized black circle glasses.
- Add the letter “t” to the front of the shirt.
- Wear jeans or black pants
Dave’s Costume
- Add a white button shirt, and slacks to make Dave’s costume.
- He’s also pictured in a plain blue sweater sometimes so that’s an option as well.
- Borrow from a friends house if you need to.
DIY Costume Tips and Tricks
- Use iron-on transfer paper to get a letter on the front of the shirt.
- Measure and cut the sleeves to fit you or your child’s arm length for a custom fit.
- Use bobby pins to style your hair in the chipmunk’s signature messy look.
- This makes for great Last minute halloween costumes because all you really need are the colored t-shirts and you can easily cut out the first initials for each chipmunk’s name and attach it to the shirt. Boom, you’re done quick and simple.
Group Costume Ideas
- Put together a chipmunk trio costume with Alvin, Simon, and Theodore for a fun trio group costume idea.
- If there are four of you in the group, add Dave to the mix.
- Use bold colors and large initials to make a cohesive look.
- Add black leggings and Converse shoes, and use hair mouse or hairspray to style your hair in Alvin’s signature messy look.

Final Touches
If you want to add your pet to the the mix, this is a great ideas for a dog costume.
Also, if you want to put together a bigger Family Halloween costume for a fun trunk or treat idea, you could always add the Chipettes – the female chipmunks known as Brittany, Jeanette and Eleanor.
Key Costume Components
Purchase Deadlines
You usually want to try to order before October 22 to make sure you get it on time for Halloween. Halloween deadlines can vary depending on the vendor, so check before buying.

Pin This Post and Save it For Later!
Conclusion
No matter which Chipmunk you choose to dress up as, you’re guaranteed to bring tons of fun and laughter to the party!
Whether you go for Alvin’s signature red hoodie, Simon’s clever look with his glasses, or Theodore’s sweet, cuddly vibe, these costumes are perfect for anyone looking to add some animated charm to their Halloween.
Also, I think this would make for such a cute Trunk-or-treat idea for a church, school or neighborhood gathering.
So grab your costume, gather your fellow Chipmunks, and get ready to make some unforgettable memories.
For even more Halloween costumes for 2025 ideas, don’t forget to check out more fun inspiration on our site!

Hi I’m Erica! TV news anchor and mom to 4 littles. I’m obsessed with creating those “wow” moments in life through crafting at home, cool travel adventures and special celebrations with loved ones. Thanks for joining me on this adventure!