I don't see it as an existing thread so I'm starting a new one. Sorry if it's around here already and I just can't find it.
Is that just a black body suit underneath the purple crop top?
Could I just get a black "underarmor" shirt to wear and get the same look? Jon wears the underarmour under his Stormtrooper and doesn't overheat. With all the layers of heavy material and leather I thought it would be nice to start with as light a layer underneath as possible.
And practically speaking, if it's a full bodysuit, I would think that trying to go to the bathroom would be quite the adventure as you'd have to remove an awful lot on top.