'Scheming' Natalie Portman

19-02-2008 15:00

Natalie Portman is a self-confessed "scheming b***h".The 26-year-old actress revealed she can be extremely ruthless when going after the film roles she wants.She said: "I'm actually a scheming b***h!" However, her 'The Other Boleyn Girl' co-star Scarlett Johansson disagreed, and insists Natalie is simply ambitious.She laughed: "I don't think you're that kind of a person. You're just healthily ambitious!"American stars Natalie and Scarlett, who play Anne Boleyn and Mary, Queen of Scots respectively, also revealed the hardest part about the film was conquering a British accent.Natalie said: "That was a big challenge. One of the biggest challenges, personally. It totally takes me out of a movie when I hear British actors doing a bad American accent. It's a scary thing. I can't improvise with an accent at all!"