“jewishfeminist2: the issur is on shmiras habris so, in regards to this taava it is irrelevant what thoughts a woman has when she looks at a man.”
you are simply incorrect. women have an issur of lo sasuru just as much as a man and it has nothing to do with shmiras habris. those are two separate inyanim. The issue of tznius similarly is not just about lo sasuru or taiva. Even if you are by yourself there is a chiyuv for both men and women to be properly covered.
would post some links to hebrewbooks.org but there is a thread on this in the coffee room already. http://www.theyeshivaworld.com/coffeeroom/topic/lo-taturu-and-women