[DrScientist]

Another point on attraction. Ideally you'd be attracted to a person that has the best 'genetic' fitness - ie ability to succeed. That's why things like symmetry are attractive ( a sign that development processes ran smoothly ).

However when it comes to things like predicting which body form will be most successful there isn't a single one as it depends on the environment. ie massive breasts and wide hips might be good for child rearing, but not very good for running. On the other hand in some situations a very large muscled man might be good - but not in a situation were food becomes scarce, or you need to be able to float.

ie there's isn't one form that fit's all niches - and so you'd expect there to be variation in body shape attraction as well.

So even putting aside the whole men/women different sexual attraction factors, even within one 'form' there will be significant variation.