mrbeef523 said: I removed the "impossible_shirt" tag because there is no shirt.
Didn't stick, I see. If you look through the tag gallery you'll see many examples of non-shirts. It's just a cute concept to describe wardrobe that clings around the breasts. It could be molded latex, but most art can't express that well enough.
Also it's trite because they are not in fact impossible to make. There is more to clothing design than draping a piece of cotton over a shape.