I read recently of a study on playboy centrefolds. The study involved comparing the shapes of the women who graced these pages over the years. It was found that the hips of these women have become less curvy and more streamlined/man-like. Upper body shape was not mentioned as far as I can emember. Of course that is to be expected as I'm sure there are some pre-requisites for upper body shape in order to be a playboy centrefold!