Nice setup. I dig it. It doesn't have the flash of "OMG WIRELESS LIGHTING!!!11!!!" nude shots, but it's not garish either.
In #2 (heh. . .#2) I'd like that little bit of skin in the upper left corner to go away so it looks more seamless, but thats a nitpick.
#1 I think I would like a little bit more definition; but as an ambiguous shot, it still works. I don't have to guess as to what I'm looking at, just what pose our model is in.