I recall hearing that the Irish had started a variant of this movement. Their slogan is "Erin go braless."
Seriously, I am continually disgusted with the USA anti-sex stance. We watch movies where folks get blown to Hell-and-gone, and with special effects that are so graphic as to be eye-popping.
For instance, in the recent movie "Fury", when the U.S. Army enters a German town and comes across a machine-gun nest, a soldier gets his leg shot off just below the knee. At another point, a tank commander literally loses his head to a cannon shell. We can name other movies that emphasize the reality of the horrors of war. But let there be even ONE SCENE where a young woman exposes her breasts for more than a few seconds and that film drops from PG-10 to PG-17 or, worse, A or X. If she exposes more than her breasts, suddenly it drops to A or X without going through ANY of the PG ratings. The religious prudes won't sit still for that.
I guess I don't really care if a woman wants to expose her bodacious ta-ta's, but if she exposes a couple of beached whales, that might not be such a good deal.