Oklahoma! is a 1999 British film adaptation of Rogers and Hammerstein's 1943 musical Oklahoma!, which in turn was based on the 1930 play Green Grow the Lilacs written by Lynn Riggs. The film was directed by Trevor Nunn and choreographed by Susan Stroman. The production featured the entire 1998 West End Revival cast at the Royal National Theatre led by Hugh Jackman as Curly McLain, Josefina Gabrielle as Laurey Williams, and Maureen Lipman as Aunt Eller.