Keira Knightley as Eliza Doolittle? That’s the word from Variety, which reports that the English actor is in talks with Columbia Pictures to star in an update of “My Fair Lady” as the Cockney flower girl who is transformed into a lady. The filmmakers say they plan to adapt Alan Jay Lerner’s book more fully for the screen by drawing additional material from George Bernard Shaw’s play “Pygmalion,” which served as the source material for the musical. The goal is to dramatize the emotional highs and lows of Doolittle as she undergoes the ultimate metamorphosis under the tutelage of Professor Henry Higgins.