I've weighed in a good deal about my dislike of the whole sheer trend, and the concomitant trend for cutouts, and oddly placed reveals of skin. But I've been thinking it over recently, and there are other things in play here besides just getting all sexed up over some bared flesh. To me they divide into two major points.
Certainly, here in San Francisco a few years back there was a major flap about public nudity, because a group of people were trying to push the envelope to get the city to formally allow it. They did not succeed, yet. But they too moved the whole conversation forward. And frankly, now when I see someone on the streets wearing nearly nothing at all, it doesn't surprise, or phase me one little bit.
Western culture people grow up being told continually that we should be ashamed of our bodies, because they are somehow bad. And all that bad feeling is generated from old guard religious concepts about sexual behavior, especially for women.