Kristen Stewart kept her Joan Jett hair covered up yet again in her hoodie on her way into the studio to continue preparations for The Runaways in LA yesterday. This time she didn't have her costar Dakota Fanning along. While fans around the world are trying to decipher the are they/aren't they of her relationship with Robert Pattinson, Kristen has her duck and cover routine down pat.


Bauer-Griffin Online