it flexes the leg muscles to look more lean than they are at rest, with the hand on the hip it accentuates the curves in a woman's body.
i know, like they're a diva or something....... or when they bend down to show their boobs. or the pouted lip. fuck i hate that so much.
LOOK MAN, stop complaining about cool shit. Pictures like these are crucial, they tell men whether they're one night stands or potential mates. This is evolution at work here, don't fuck it up. But the duckfaces and shit has gotta go.