Casual - 164 Halloween Costume Ideas
Casual costumes live and die on getting the details right, not the effort level. Annabeth Chase's orange camp shirt, Christopher Moltisanti's flat affect, Sally Albright's plain sweaters, the clothes are ordinary, the character is in how you wear them.
This is the cheapest category on the whole site to build. Most of it comes straight from your closet or a thrift rack, no specialty pieces required.
The risk here is looking like you didn't dress up at all. One character-specific prop or detail is usually what separates "costume" from "outfit."
Mostly, yes, with one detail that ties it to a specific character. Skip that detail and you're just dressed, not costumed.
Yes, better than almost anything else on the site. Most of these builds come from a closet, not a shopping trip.
Add one clear prop or accessory. A plain outfit alone rarely reads as a specific person without it.