Pop on a grey sweatsuit and some boxing gloves and you're ready to knock out the costume competition with a Rocky Balboa-inspired look.
Billie Eilish
If you want to go with shorts, no problem! Pop some on with a matching oversized sweatshirt and a green wig to look like the "Ocean Eyes" singer.
Athlete
Throwing on a pair of gym shorts and a sports jersey is an easy way to show some spirit while staying low-key.
Princess Diana
Bring out your inner royal by dressing in Princess Diana's iconic biker short and sweatshirt combo.
Ted Lasso
A blue tracksuit, visor and whistle is all you need to transform into Jason Sudeikis' character from the award-winning TV series. Add a mustache for a little extra flair too!
ASAP Rocky
Does a blanket count as comfy clothes? Throw your grandma's favorite quilt over your shoulders for a cozy and celeb-approved Halloween look.