This is really not a domain I should be commenting on, but I did just read a great thought from the Vilna Gaon. He said that tznius to a woman is the same challenge as learing with hasmodoh is to men.
And let me tell you, learning with hasmodoh is a REAL challenge, beacuse the distractions are always right on the edge of your field of vision. So if women feel the tznius challenge, its with good reason (so says the Vilna Gaon).