between fashion and hair, the obvious answer is rihanna. just think about the impact her hair has, girls are still getting the edgy umbrella cut, or dying their hair red, and i see girls still rocking the rude boy look. i cant believe anyone is even choosing gaga, she dresses like its halloween everyday, its beyond tacky, and makes one wonder without the gimmicks would gaga been as succesful as she was. anyway rihanna.