In 1956, two icons — Marilyn Monroe and Sir Laurence Olivier — got together in London to make a movie, The Prince and the Showgirl. It was a comedy about the lonely Prince Regent of Carpathia, who meets a flirty American showgirl. The film was a royal flop. Now a new movie, My Week With Marilyn, recounts the miserable time had by all on the set. It's the story of one week during the film shoot, with behind-the-scenes clashes, misaligned acting styles, and the pursuit of personal ambitions. Michelle Williams plays Monroe and Kenneth Branagh plays Olivier.