No `Fifty Shades of Grey` for Keira Knightley

London: Actress Keira Knightley is adamant she won`t be playing Anastasia Steele in the movie adaptation of erotic novel ‘Fifty Shades of Grey’.

The 27-year-old says she will "definitely" not be starring in the anticipated adaptation of E.L. James` erotic novel, which details a story about billionaire Christian Grey`s relationship with young student Anastasia Steele, reports

Asked whether her next film project would be a more risque literary adaptation than she has done in the past, Keira insisted: "No, it`s not. It`s not going to be `Fifty Shades of Grey`. You know, I normally don`t like to give a definite about anything, (but) I can definitely say it will not be `Fifty Shades of Grey`."