Actress Keira Knightley is sick of playing the heroine and would relish the chance to portray a movie villain. The Pirates of the Caribbean star, 22, has been looking for a suitable role for some time, but fears her ventures into period dramas like Pride + Prejudice has already got her stereotyped. She says, "I'd love to play a baddie, absolutely, everyone wants to play a bad character - I just haven't found one yet. "They keep offering me nice parts. What's the matter with them?" And the English beauty admits she would have no qualms about playing a bitchy character on the big screen - because it would come naturally to her. She adds, "I think everybody is (a bitch), aren't they? I have my moody moments. Anything can set me off."