The 42-year-old will reprise her role in the forthcoming 'Wizard of Oz' prequel and she says the character is very different to her regular alter-egos, reported Sun Online.
"I didn't do any research at all for this film - I just tapped into my own bad girl. I'm as bad as the next person, but that's the thing about real life - we have to control ourselves.
"It was a fun idea to be playing someone who is really, really bad. I can't think of any roles that I've had like that before. She's really, really a bad person and she revels in being bad," she said.