I think she has the type of body where your legs can look decent (I'm not saying thin or anyhting, but in comparison...) unlike the mid-section.
I have a friend like that. She'd been recently posting half naked pictures of herself (with shirt lifted) and when you see the mid section you want to scream. All in muffintops and stuffed everywhere, but her legs look very thin and slender.
That's exactly what I think!