The problem comes when women dress that way because they feel they are not worth more than their bodies. Feeling sexy for oneself and drawing strength from it is very different than dressing provocatively because it is "expected" of you.
I disagree with both. If you wish to express your sexuality, no matter the form, you should not be shamed, just as you should not for not embracing the sexual culture. One never knows why someone is not sexual, or why those drives are higher in others, after all.