30+ Tween Costume Ideas to Slay Halloween 2025

Your preteens searching for a kooky costume idea for Halloween this year will love this inflatable alien. The smaller size will fit your tween up to a height of 55 inches/1.4 meters. (Needs 4 x AA batteries!)

Looking for a cute Halloween outfit for a tween girl? You can’t get much more on-trend than this Wednesday Addams get-up. Complete with her signature plaits, belt, and stockings, this will undoubtedly be a go-to costume for girls in 2025!

A pullover tank top with a mesh base layer, this Mysterious Mummy costume features torn strips on the top and pants, creating a bandage-like appearance. An ideal tween Halloween costume if you want to stick with creepy and scary but advance beyond a few wraps of toilet roll!

Even the Devil can be stylish! This fun Halloween costume is bright, colorful, and cute for tween girls. Unlike many adult devil costumes, this one remains modest and entertaining, making it a great choice for a pre-teen girl’s Halloween costume.

Stranger Things made Retro totally cool again! Cute as a button, Eleven on her skate date will be fairly recognisable to your older tweens. Could also be paired with Mike of Max Mayfield for a dynamic yween girl duo

If your tween is into the Five Nights at Freddy’s game, this Halloween costume is the perfect look for boys. It’s especially designed with tween and teen sizing in mind, which can be tricky with full-body costumes.

This Ezio Halloween costume will make the perfect outfit for video game-loving tweens who enjoy the Assassin’s Creed series.

Ready to give them a little spooky scare? This sinister jester Halloween costume is a fun and spooky Halloween outfit for tweens.

A take on the costume from a popular tv series that many saw on Netflix, this jumpsuit Halloween costume is perfect for sharing a spooky Halloween night.

It can get pretty chilly by Halloween, right? Long-sleeved and padded, your tween can show off their love for their favorite Marvel character while staying warm on Halloween night with this awesome Groot costume, including mask and shoe covers.

Is your tween looking for something a little more grown-up and adventurous but still in keeping with their tween image? This Twilight Huntress outfit could be just what she’s after for something a little more mysterious and brave.

If you’re looking for a fun family combo, then Violet and the Incredibles could be just the costume your tween girl will jump at!

An oldie but a goldie, this can be a lot of fun and a relatively cheap costume idea. The Zombie Cheerleader is an ideal group costume for tween girls, or could also be a mixed tween group to have some fun with makeup and an introduction to more gruesome horror.

The classic Grim Reaper never goes out of fashion when it comes to seriously creepy tween boy Halloween costumes.

Want to keep it fun and playful? Dress up as Winifred from the classic Hocus Pocus movie! The perfect size for tweens, this dress is both comfortable and light, making it ideal for Halloween.

Superhero fans will love heading out for a night of trick-or-treating with this costume. Your tween girls will be on trend with this Ms. Marvel costume – or boys can’t go wrong with a classic Captain America or Thor.

Edward Scissorhands was a classic movie that seems to come to life each year during Halloween. This costume is perfect for tween girls, including everything they need to recreate the Edward Scissorhands look.

Something cute, creative, and on point for 2025; if you’re looking for Middle School Halloween costumes for your kid to stand out from the crowd, your very own Barbie box could hit the spot. (Spirit Halloween selling via Amazon has plenty more officially licensed Barbie costume ideas!)