I remember when this campaign was released on the free people blog. People were going nuts over her legs in this image. Saying she was too thin, she needed a sandwich, etc. Free people might have even made a response. I think she looks pretty damn good! More commercial models should look this way, she made me love every pair of jeans she wore. Now that's advertising.
I've noticed that too- one side dips in more than the other & makes it look off-kilter. She looks lovely but the asymmetry is very glaring to me (perhaps because mine do the same and it throws off my lines).