I should be clear to include girls with wide hips or who are otherwise generally curvy in some fashion. We seemed to go through a phase where movie stars and models all had the body of 9-year old boys. No hips or butt. While you always read about how this was creating poor body image for young girls, I think most dudes were like, "Uh, that's not attractive."
Because the truth is, I think dudes go more for girls with butts that stick out, hips that are wider than their shoulders, and a little bit of a pouch in the front is all good too. So when you see a TV show like that where Beyonce and Kelly Clarkson get up there and show their stuff, it's a good thing. Show off your curvy parts, ladies!
People were getting all over Christina Aguilera because she put on a few pounds. Frankly, I never though she looked better (and not just because I dig black hair and piercings either). She was one of the worst offenders when she started out. No hips, no butt. In all fairness, I think a lot of that had to do with her just growing up (remember people thought Britney got implants, when in reality she had just matured to that point).
Christina has lost a lot of that weight again, but she retained the hips and butt. That's what it's all about. Anorexia has finally gone out of style, and the world is once again at peace.