Rachel Weisz was a vision in red at Wednesday's premiere of Oz the Great and Powerful at El Capitan Theatre in LA. Rachel chatted with us on the chilly red carpet about channeling her inner "bad girl" to take on the part, which is still shrouded in lots of mystery since the movie is full of surprises. Rachel also spoke about how she has revealed her character's secrets to her close friends, but she isn't worried about them letting the cat out of the bag.