"Diamonds Are a Girl's Best Friend" is a jazz song introduced by Carol Channing in the original Broadway production of Gentlemen Prefer Blondes (1949), with music by Jule Styne and lyrics by Leo Robin. Marilyn Monroe version American actress and singer Marilyn Monroe performed the song in the 1953 film Gentlemen Prefer Blondes. Monroe's character, Lorelei Lee, has been followed on a transatlantic ocean liner by a detective hired by her fiancé's father, who wants assurance that she is not marrying purely for money. He is informed of compromising pictures taken with a British diamond mine owner and cancels her letter of credit before she arrives in France, requiring her to work in a nightclub to survive. Her fiancé arrives at the cabaret to see her perform this song, about exploiting men for riches. Diamonds are an element in another story line in the film, in which Lorelei is given a diamond tiara by the mine owner, in gratitude for her recovering the photographs. In a later scene, Jane Russell, who played opposite Monroe, sang "Diamonds Are a Girl's Best Friend" in court, while pretending to be Lorelei. Most of the song in the film is Monroe's own voice and sources differ on how much help she had. The American Film Institute, TCM, and a biography of director Howard Hawks state the only help she had was for the brief high-pitched introduction to the song (usually not included in singles), which was sung by Gloria Wood. However, a 2007 article in The New York Times recounting the career of famous ghost singer Marni Nixon claims Nixon dubbed the phrase "These rocks don't lose their shape." George Chakiris can be spotted as a member of the admiring male chorus. The number was later re-shot in CinemaScope, to be used as part of a CinemaScope demonstration held on the Fox lot in March 1953. Producer Darryl F. Zanuck told Daily Variety that it only took hours to shoot the number in CinemaScope versus four days for the original film version. The public finally saw the CinemaScope version ten years later when it closed Fox's documentary tribute to Marilyn, but this has not been released on DVD or VHS. Influence Monroe's rendition of the song was ranked the 12th best film song of the century by the American Film Institute. Monroe's performance has been referenced by entertainers ranging from Madonna and Kylie Minogue