right arm & hand on the floor, this right hand is the one you see reflected on the mirror
left arm reflected on the mirror, you can't see her actual arm though.
anyway, it's a strange composition because it creates a weird two-headed effect, and two-bums as well!
this takes away a great deal of attention from the picture itself (what do they want to communicate, anyway?)
the idea of emphasing a two-sided character would have played better if the butt didn't have the main focus of the shot
(ah! wasn't it part of her job to keep a perfect ass?