Ugh, people like you are annoying. She is not that thick. Try watching more belly dancing videos.
Anyways, her main problem is focusing more on the camera instead of the music. I know people do that to try and look more sexy, but it has the opposite effect by making your moves look unnatural and that you're thinking too much. She's also singing along to the song, and if you do that while dancing, it helps to mouth some key lyrics with more purpose so you don't look like you're kind of muttering.