It looks like it's not her head on tha body. The head is small and the neck long, then you get to what looks like a squat, round body. Is she supposed to be pregnant maybe?
The face, neck and arms are all thin, but her stomach and hips seem large and there is no waist definition. Certainly doesn't look like a usual photo for clothing. Pair that with the shirt and pants being nothing special and the photo really does look "off". Also, her bent arm doesn't look like it would be the same length of the straight arm if it were extended. I think it is just a very awkward photo all around!
Feels to me like the shirt is really unflattering with the pants they've styled her in. Those tops seem to be coming in, but I will pass on that silhuoette!