Playing Joan Jett in The Runaways was a gratifying journey for Twilight actress Kristen Stewart.  However, she does admit that meeting the iconic rock star was a bit tense, especially since Jett doesn’t exactly project moonbeams and sunshines.  However, beneath the sexy snarl, the black leather, and trademark hairdo, lies a very nice person!! At least, according to Stewart.  The Runaways opens in limited release Friday. (CLICK ON THE MEDIA BAR TO HEAR KRISTEN STEWART)