Halloween’s around the corner, and let’s face it, one cute costume is great, but two (or more)? That’s double-tap worthy. Welcome to the ultimate guide for sibling Halloween costumes! These aren’t just outfits; they’re memories in the making. Whether your kids are into video games or story book characters, we’ve got ideas that will make your Halloween Insta-famous. (Get ready for cuteness overload.)
How to choose a sibling Halloween costume
Picking the perfect sibling costumes isn’t just about what’s trending or what looks adorable—though let’s be real, that’s a big part of it. The secret sauce? It’s all about the kids’ personalities. Do they have a shared obsession with a cartoon series? Bingo! Are they polar opposites like night and day? Even better—think sun and moon costumes. The key is to find a theme that lets each child shine while still forming a unified, picture-perfect ensemble.
We’ve rounded up a collection of Halloween costumes for brothers and Halloween costumes for sisters which can, in many cases, be expanded on for larger crews! (Family Halloween costumes included!) So grab your little monsters, fire up the Pinterest board, and let’s get this Halloween costume party started. 
Mario and Luigi
| Busy Mama Life (@mayelin__)Hot Dog and Ketchup
Harley Quinn and The Joker
There are lots of great villainous pairs to choose from, but between the face paint and colorful hair styles, Harley Quinn and Joker are always a lot of fun to execute.
Pirates
Ice Cream Scooper and Ice Cream
Real Life Hero Squad
From fire fighters and police to army soldiers career-themed costumes are great for Halloween and role play all year round.
Tooth and Toothbrush
(@beyond32teeth)If you’ve got a toddler with opinions and a baby who has no choice but to go along for the ride, hilarity is bound to ensue. A tooth and toothbrush are also semi-easy to whip up with felt and pool noodles. Win win!
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Rock, Paper, Scissors
Get major creativity points for this clever group costume. Of course you can make a lot of it from poster board, but if craftiness isn’t your forte, don’t worry. We’ve got you.
A Very Hungry Caterpillar and Butterfly
The Grinch and Cindy Lou Who
Cinderella and Prince Charming
Wednesday and Pugsley Addams
Is there a better set of siblings to pay homage to on Halloween than Wednesday and Pugsley? We think not. (We also love this adorable set from Etsy that’s perfect for little ones!)
The Sanderson Sisters
They are sisters, after all! Sarah, Winifred and Mary Sanderson are a classic choice at this point. (We also love this option which each come with matching wigs!)
Wayne and Garth
The Queen and her Corgi
If you’re working with siblings of the furry variety, may we suggest this royal pairing? (It’s the wig that really does it for us.)
Cruella and her Pups
(@crozierquadsplus1)Pebbles and Bam Bam
Lion pals
Ghostbusters and the Stay Puft Marshmallow Man
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