I think generally her body is more proportional, and I think she has a better midriff. Could just be her pose or the angle, but whatever it is...she has my attention. You?
Definitely agreed on the midriff, its longer and slightly more toned, I think her face also looks more youthful and pretty compared to the other girl. The other girls got a more "standard hot girl on IG" face, still attractive but not as much as left.