Women with curvy figures are likely to be brighter than waif-like counterparts and may well produce more intelligent offspring, a US study suggests.
Researchers studied 16,000 women and girls and found the more voluptuous performed better on cognitive tests - as did their children.
The bigger the difference between a woman's waist and hips the better.
Researchers writing in Evolution and Human Behaviour speculated this was to do with fatty acids found on the hips.
In this area, the fat is likely to be the much touted Omega-3, which could improve the woman's own mental abilities as well as those of her child during pregnancy.