18 Cute Sister Halloween Costumes That Are Perfect for Any Inseparable Duo or Trio

If there's anyone you can convince to show up to a Halloween party in matching costumes, it's your sister. After all, she's the person you can always count on to make you laugh, dry your tears, and in this case, make your Halloween dreams come true. While you can certainly take the easy route and pick a head-to-toe matching look, there are so many other sister Halloween costumes made with you and your built-in BFF in mind. Take a look at the following ideas to find a costume for sisters of varying ages, from toddlers to adults.

Even the most dynamic duo (or terrific trio) may have a hard time agreeing on their 2021 look: One may want to go with something inspired by her favorite book characters or pop culture icons, while the other may prefer a scary costume that taps into the frights of the holiday. First, settle on a theme, then consider if you'd rather buy ready-made costumes or make homemade Halloween costumes. But it doesn't have to stop there: If you really want to make it a family affair, convince your other brothers and sisters to get involved for an epic siblings costume.