But are women with higher testosterone level are more likely to find men with higher estrogen level as more attractive? Are men with higher estrogen level are more likely to find women with high testosterone level as more attractive?
Note, that higher testosterone does not immediately mean lower estrogen (so, first paragraph does not answer negatively) or vice versa. Some people can have both of these higher or lower than mean values (for their gender).
Welling, L. L., Jones, B. C., DeBruine, L. M., Smith, F. G., Feinberg, D. R., Little, A. C., & Al-Dujaili, E. A. (2008). Men report stronger attraction to femininity in women's faces when their testosterone levels are high. Hormones and Behavior, 54(5), 703-708.
DOI: 10.1016/j.yhbeh.2008.07.012 PMID: 18755192