Just watched my recording of the film Mannequin.
Some great music from the late eighties, including the song in the final scene.
Both "Emmy" and "Roxie" went on to star in the "Sex in the City" series.
The plot is pretty much the same as that of the 1948, "One Touch of Venus." a film made of the Broadway show, with Ava Gardner and Robert Walker. Another film I enjoyed.
The leads sing the song "Speak Low," are actually miming to Eileen Davis and Dick Haymes who briefly also appear.