I've noticed something about celebrities, especially the musical type. They start a bit.. innocent, I suppose? Maybe that's not the word. They're normal. Ohh, but then, later on? They get more "sexy" and wear less and less as time goes by. Whory, as you say. It happens.
Though I will admit this much, however, about Britney. It does seem a little bit of an improvement than before. Mayby tramp-like, but the clothes are an improvement. Let's hope it gets better.