Rabbi Yehuda Levin on Tznius, our responsibility. In this shiur, he addresses that 70-90% of our Jewish women, including Rebbetzins, Kollel wives and girls, could improve in the area of tznius. He also presented a book (in Hebrew) that's available at Eichler's that shows diagrams on articles of tznius. (Pretty much like what we have in Rabbi Falk's Tznius Handbook.)
This shiur is addressed to the Jewish men, to instill in them the important role they should play in the tznius of their wives and daughters. The Rav also addresses the influx of outsiders to Lakewood who have lowered the standards of tznius in the Yeshiva community.