things sure are heating up in the coffee room!
as one of the other comments stated earlier, everyone needs to take responsibility for their own actions. Women who know better and act outside the realm of halacha when it comes to the way they dress will be held accountable by the One Above. Men who do not guard their eyes according to their true abilities will be held accountable, as well.
Adults are expected to do their best to combat their own yetzer hara. Taking personal responsibility is part of being a mature adult.
I heard a well-known rebbetzin say that in addition to getting rewarded for the mitzvah of acting and dressing in a modest way, the woman also gets credit for doing a chesed–she is making it easier for men to avoid viewing things they should not. That said, the purpose of dressing and acting modestly is to promote a woman’s own spiritual self-awareness and growth.