Wallis selected Michael Curtiz, a noted director of the Hollywood studio system whose works included "The Adventures of Robin Hood", "Yankee Doodle Dandy" and "Casablanca". Curtiz decided to shoot the film in black and white for dramatic ambiance and to give the streets a film noir appearance. He also selected an experienced cast to support Presley, including Walther Matthau and Carolyn Jones, as well as Dolores Hart, Presley's co-star in the 1957 film "Loving You." Curtiz instructed a "taken aback" Presley to lose fifteen pounds and shave his sideburns for the role, both of which Presley did.