Discussion on question by je_b: What to do with a student coming to class in revealing clothing, to the degree that it disrupts the teaching environment?

Lowering the room temperature might force her to wear more clothing.

I don't quite understand all that "free country" routine. Just because it's not illegal doesn't mean a school or a TA can't do anything about it. Chatting in class is certainly not illegal but you still ask students not to do it.