Even total strangers could detect a difference in women's grooming habits when they approached ovulation
Forget Basal Body Temperature -- Check Out Her Clothes; Signs Of Ovulation May Be More Obvious Than Supposed
"Near ovulation, women dress to impress, and the closer women come to ovulation, the more attention they appear to pay to their appearance," said Martie Haselton, the study's lead author and a UCLA associate professor of communication studies and psychology. "They tend to put on skirts instead of pants, show more skin and generally dress more fashionably."