Good questions, @5128gap. Yes, I think revealing clothes are meant to display healthy young flesh. They look great on fat young women, whose flesh is often even more luscious than their thin sisters'.
I did say there's nothing stopping anyone wearing them! Those whose revealed nakedness is of a different quality will, obviously, look different in them.
Our fashion choices are a semiotic language - advertising, if you like. (Yes, they can convey a message of "I don't care about fashion". Mine often do, although I'm very interested in fashion!) Revealing outfits can suggest sexual availability regardless of the body on display. They can advertise a successful HIIT regime. They can proclaim pride in scars.
The point is that the wearer's chosen an above-average degree of nakedness, and the choice conveys a message. Not everyone will interpret the message as intended; such are the pitfalls of human communication. I'm pretty sure I would, actually: I've been observing this stuff since I wrote my dissertation on it fifty years ago!
You made a couple of seven-league jumps in your reply, which don't stand up to examination but I'm not about to write another dissertation here. It might be enough to point out that you can pay anything from £12 to £2,000 for a body-skimming mesh dress. Different women will wear them differently, conveying a range and mixture of messages that will be largely, but not universally, understood.