Most Helpful Guy
I have to mention that it's pretty hard to tell from the seated position. The girl all the way on the left looks like her legs are squished so that they look bigger than they might really be.
That being said, the girl on the far right has the best legs. My rule of thumb is to look at the ankles. I think the ankles on a girl with great legs should be noticeably smaller than the lower calf, but not minuscule in comparison. It needs to be small enough to have shapeliness, but not dwarfed by a huge (unattractive) calf muscle.0