From a recent paper in the Review of General Psychology (A publication of the American Psychological Association).
Women with low Waist-to-Hip ratios (narrow waists and broad hips) are consistently rated by men in many cultures as more attractive, with optimal WHRs being about .7. Large samples of Playboy models and female ﬁlm stars both converge on this value, with each showing average WHRs of about .68. In a recent study, men who were born blind or developed blindness later in life were presented with mannequins varying in WHR. Even those who were born blind preferred the shape of the low WHR, indicating that visual input is not necessary to develop or maintain this preference…
…By now it should come as no surprise that women with low WHRs are more reproductively viable. They ovulate more often, have more regular menstrual cycles, and are more likely to conceive as a result of artiﬁcial insemination and in vitro fertilization. Women with low WHRs are also healthier. They have a lower risk of heart disease, stroke, diabetes, gall bladder disease, kidney disease, and various cancers.
Hmmm…and I thought I was ogling for ogling sake.