Women's attractiveness changes with estradiol and progesterone across the ovulatory cycle

► We collect women's photographs, voice recordings and saliva across two sessions. ► We measure estradiol and progesterone levels from saliva. ► We obtain attractiveness ratings of photographs and voice recordings. ► Progesterone negatively predicts attractiveness to men and women. ► High estradiol relative to progesterone positively predicts attractiveness to men.