Rosalie is a 1937 American musical film directed by W.S. Van Dyke and starring Eleanor Powell, Nelson Eddy and Frank Morgan. An adaptation of the 1928 stage musical of the same name, the film was released in December 1937. The film follows the story of the musical, but replaces most of the Broadway score with new songs by Cole Porter. The story involves the romantic entanglements of a princess in disguise and a West Point cadet.