Diamonds Are a Girl’s Best Friend is a song jazz sung by Carol Channing in the musical comedy of Broadway Gentlemen Prefer Blondes (1949), written by Jule Styne and Leo Robin  (in) . The musical is based on Anita Loos ‘ novel Men prefer blondes  (in) (1925).

The song is however better known since its resumption in the film The men prefer the blondes (1953) where it is sung by Marilyn Monroe .

The song is listed in the 12 th place of the most important movie songs of all time by the American Film Institute .