Evolution May Explain Why Men Like Curvy Bottom

These curvaceous gals would have had an evolutionary advantage, in that they appeared able to bear multiple children easily, the researchers said.
"This spinal structure would have enabled pregnant women to balance their weight over the hips," said study leader David Lewis, a UT Austin alumnus and now a psychologist at Bilkent University in Turkey.
"These women would have been more effective at foraging during pregnancy and less likely to suffer spinal injuries," he said in a UT Austin news release. "In turn, men who preferred these women would have had mates who were better able to provide for fetus and offspring, and who would have been able to carry out multiple pregnancies without injury."
This preference evolved over thousands of years and is likely to persist for a long time, the researchers noted.
Their conclusions came from a two-part study in which 100 men were asked to look at images of women and rate their attractiveness. Women with a 45.5-degree in the lower back were rated as most appealing. The researchers next determined from a group of 200 men that guys preferred this degree of lower back curvature regardless of a woman's butt size