Very good from the waist up but it seems like they lost track once they started going bellow the hips. It's a very sharp twist but doesn't affect the belly button, oddly the bottoms seem a bit confused on which direction they're facing, the white ones seem to go strangely low but are still snug while the lower body just seems strangely small in proportion to the rest.

Overall, I still think it's a great image but the artist probably should have either taken another shot at her lower half to make sure it matched proportionally or just cropped it out.