Group Costume - 38 Halloween Costume Ideas
These costumes are designed to read as a set, Ghostbusters' matching jumpsuits, Charlie's Angels' coordinated glamour, Run-D.M.C.'s shared style, none of them look complete with just one person wearing it alone.
The whole group needs to actually commit for these to work. One person in a Ghostbusters jumpsuit standing alone just looks like they're going to work, the group is what makes the reference land.
Not really, most of these need the full group to actually read as the intended reference.
It varies by guide, usually three to five, check the specific costume for the ideal group size.
The look can still work with fewer people, it just reads less clearly, lean on the pieces that are most visually distinct.