What do you mean?
I mean the only time she has a defined ass is when she arches her back to the point where from a girls perspective, (taking this from most of the girls I know) it looks almost painful. Her breasts are incredibly small, and they only look as large as they do because Victoria's Secret swimwear and lingerie add a great deal of pushup. I'm not saying she's not a beautiful girl, because I do think she is. She doesn't have a bad body, but the body everyone seems to feel she has she doesn't. She's an incredibly petite girl, and is lacking a few fundamental curves to be considered "THE body".
There's a reason she can float between high fashion and commercial so well, especially in light of working with Victoria's Secret which has no problem padding what is already good to make it great. She knows how to move her body to accentuate what she does have, which is good. The main reason she can look so curvy is because she has a very broad hip, take that away and she is just as petite as girls like Morgane Dubled, Angela Lindvall. Any of those girls who are incredibly petite and known for their high fashion careers.
This.