Sometime in our collective culture, thin(nigh anorexic in some cases) women became extremely popular, and dominated society's general collective libido. When did this occur? What does one have to do to change it, to, atleast allow a more healthier body size be prevalent?
Extra points if it's a little larger than that.
You can have any sensible PoD(preferably after 1600), since I don't know when this happened. Can it be done, and how different would the world be?