Not exactly a difficult thing to do, all you have to do is lose the clothes and there you have it...
Well, Oblivions character models aren't exactly Waterhouses Nymphs. (For those who don't know, it's art. I just don't know if the prudish Draco and Polyanna will approve of a link.) Generally I wouldn't care much but they're supposed to instil a sense of abstract beauty.
edit:
Slightly more relevant. Wiki mentions:
The symbolic marriage of a nymph and a patriarch, often the eponym of a people, is repeated endlessly in Greek origin myths; their union lent authority to the archaic king and his line.
Sounds like the Remanada.