They aren't harming us, not bringing down the scene at all, they just feel comfortable in the little amounts of clothing they wear. Who are we to say they cant not wear clothes...Just make sure you don't find yourself hooking up with some major jailbait. Maybe make them wear a name tag with birthdate on it or something.
If they start to become a problem, then we can do something about it. But for now, let them be naked or whatever they want.