It's never too early to start thinking about Halloween costumes, especially if you need to coordinate for a group, like sibling Halloween costumes. Whether you're looking for 3 sibling Halloween costume ideas, brother and sister Halloween costume ideas, or older sibling Halloween costumes, you should be able to find plenty of ideas below.
Classic pairs, like Mickey and Minnie Mouse, Donald and Daisy Duck, and Wednesday and Pugsley Addams work whether you're looking for toddler and baby sibling Halloween costumes or teenage sibling Halloween costumes. The Grady twins and Chucky and Bride of Chucky are a couple good scary sibling Halloween costumes. If you're looking for something less frightening, M&Ms are one of the cute sibling Halloween costume ideas. That costume also falls under matching sibling Halloween costumes, and sibling Halloween costumes that work for boys and girls.
Check out the costumes below, and vote up your favorites - you know, the ones you would be willing to wear with your siblings.
Alice in Wonderland & The White Rabbit
Another human/animal pair, Alice in Wonderland and the White Rabbit are sibling costumes that everyone would be familiar with.
Wreck-It Ralph & Fix-It Felix
If the siblings have a heigh disparity, Wreck-It Ralph and Fix-It Felix could be a great costume option. These costumes could also probably be thrown together easily, with clothes you may already own.
Thing 1 & Thing 2 (& The Cat in the Hat)
Thing 1 and Thing 2 are great costume options that can be recreated with nothing more than a few T-shirts!
Ariel, Sebastian, & Flounder
For Disney-loving siblings who also love the sea, Ariel, Flounder, and Sebastian could be great costume options.
Starucks Barista & A Drink
A barista and a latte costume could be for the more creative siblings who want to make their costumes themselves.
Harry Potter Characters
One instantly recognizable trio is Harry Potter, Ron Weasley, and Hermione Granger. This is great for a group of siblings, and more characters can easily be added to acommodate bigger families.
There are plenty of Disney villains to pull from for siblings, ranging from the fashionable, like Maleficent and Cruella, to the more spooky, like Chernabog and Hades.
Woody & Buzz
Woody and Buzz are an iconic Pixar duo perfect for sibling costumes for Halloween. You just need to get yourself a cowboy costume and a space man costume.
With another Ghostbuster film on the way, many siblings may be dressing up as ghostbusters, or even ghosts this year.
Peter Pan & The Lost Boys
Large families can pull inspiration from Peter Pan and the Lost Boys. You could even add in Tinkerbell, Captain Hook, and Mr. Smee for really big groups!
The Sanderson Sisters
Hocus Pocus is a classic, Disney Halloween film, so it stands to reason that the Sanderson sisters would make for a great sibling Halloween costume.
Rey & Chewbacca
Lots of young girls (and boys!) want to dress up like Star Wars hero Rey. To add a twist to this costume, one sibling could throw on a furry, Chewbacca suit.
Elsa & Anna
Anna and Elsa from Frozen are great for a pair of siblings, though you could also add in side characters like Olaf, Sven, and Kristoff.
Little Red Riding Hood & The Wolf
Little Red Riding Hood is great for sibling costumes if one person wants to dress up girly, but the other wants to wear makeup, fur, and wolf ears.
Minions are an easy, quick costume for siblings. You just need denim overalls, black gloves, and some goggles.
Cruella & A Dalmation
The Cruella movie was a big hit, so this is a timely costume. Once you have the wig, just make sure your outfit is high fashion. Bonus points for pairing with a Dalmation, or a Chihuahua to dress up like Wink!
Falcon & Winter Soldier
Falcon & Winter Soldier will probably be popular Halloween costume choices thanks to the popularity of the Marvel series of the same name on Disney Plus.
There are so many options for the Peanuts crew. You and your siblings could dress up as Charlie Brown and Snoopy, or Lucy and Snoopy, Lucy and Shcroeder, etc.
Rey & Kylo Ren
Rey and Kylo Ren are another great brother/sister Halloween costume. It's popular enough that you can probably easily procure the costumes. Toy lightsabers are a must-have prop.
Wednesday & Pugsley Addams
Wednesday and Pugsley Addams are a great costume whether the siblings are young or old. They're fairly simple pieces to find, and yet still really well-known as a costume.
Thor & Loki
These fan-favorite Marvel brothers make for a great costume for any pair of siblings. To accomodate more siblings, add in the rest of the Avengers.
Rapunzel & Pascal
This costume could allow the more creative parents to do body paint or face paint makeup for Rapunzel's trusty pal, Pascal.
WALL-E & EVE
This costume may be for the more creative sibling duo, though for EVE, you could always just wear white, with black sunglasses, and wrap some twinkly lights around you like a boa.
Alvin, Simon, & Theodore
Most children in America grew up with some iteration of Alvin and the Chipmunks. Busy parents can throw this costume together quickly by simpling grabbing red, blue, and green hoodies.
Miss Piggy & Kermit the Frog
Who doesn't love The Muppets? Kermit and Miss Piggy are another instantly recognizable duo.