Most Helpful Guy
I mean, there's not much difference in body shape here. 1 is super scrawny. 2 is still scrawny but a bit more fit. 3 is scrawny but with some hips and bigger boobs. 4 is kind of an average between the other three. I would go with 3 though, from the hips and hair color.
Most Helpful Girl
Definitely the fourth one, you simply cannot beat the all completely natural curvy look/body.