(ABCNEWS.COM)  10 October 2006:

What makes a woman dress to impress?

A new report says the answer might be in the ovaries.

According to a study done by UCLA and the University of Wisconsin-Eau Claire, women put more time and effort into their appearance when they’re ovulating.

The study’s lead author, UCLA professor Martie Haselton, explained how she and her researchers had come to the conclusion that ovulation affects a woman’s appearance.

“What we did was photograph the women on a high fertility day and a low fertility day, and we showed those photographs to a separate set of judges, and we asked them, ‘In which photo is the woman trying to be more attractive?’” she said.

The judges picked a woman’s high fertility photograph 60 percent of the time — a rate much higher than random chance.

“For the women who were actually ovulating on the day of their period, it was more than 80 percent for those photos,” Haselton said.