Years ago Andrew Price did this thing on a steamy window. This is my take on the theme, which I finally got around to finish (though I will add more steam once I figure out how to render smoke in Lux).
I like it. The shower, modelling of the girl, pose and the contrasty light on her skin works really well. Overall the composition bothers me a little as the really saturated towel and the mirror lights are a bit of a distraction, but nice work!