First off, just thought I should get this out of the way: No matter what you're wearing or doing, even if you are a drunk high passed out prostitute, you do *not* deserve to be raped. Thought I should just get that out of the way.
Secondly, I think that our society has a very skewed and immature attitude towards sexuality. They are turned breasts into something that is stupidly enough, "hot." Sure, I suppose the shape of them is sensual. There is a huge line between sensual and sexual. Showing a little bit of natural cleavage is not *bad*. You're a woman. It happens. On the other hand, wearing shirts that cut down to your belly buttons are perhaps only appropriate at a night club.