In humans, a case can be made for sexual selection. The shape of a woman's hips is an erotic trigger for we men, and it is an indication that the hips are wide enough for a decent birth canal to function and produce a live baby. Ample breasts are another trigger and they are needed to nurse the baby. An ample buttock stores energy reserves and the back curve indicates a balanced spine. bow legs, skinny calves and other disfiguring characteristics are indications of misuse, mal nutrition, or genetic defect.
We men do seek what is physically healthy, but we are certainly at least as concerned over the personality! It too has a selective basis---at least to me. I don't know if this has been researched, but in my case perhaps we can see an example of what I am talking about. I have no patience with stupid women, but that does not mean I want one who claims to be smarter than myself. This may seem a paradox to you all, but the fact is that a very smart woman can be very feminine and, hence, very attractive. I am not saying their femininess is "put on." It is only attractive if it is genuine. Men are not that easily fooled.
charles
http://humanpurpose.simplenet.com