What to wear?

So I've been to a couple of dungeon parties and what not where people were wearing nothing or lingerie or fully clothed. Pretty much anything was ok, but this weekend I'm going to a swingers/kink party. Not entirely sure what to wear. I want to wear something sexy but not be like out of place if other people are wearing more like modest clothing. I'm not too familiar with swingers so I'm sorry if it's a dumb question