Director Michael Gottlieb got the idea for this film when he was walking by a store window and was startled to "see" a mannequin move by itself. He realized it was just an optical illusion caused by a combination of lights and shadows, but began to wonder what would happen if a mannequin actually DID come to life.
Originally, the lead part was written to be an older, lonely storekeeper, with Dudley Moore in mind for the role, but when Andrew McCarthy came on board, the part was rewritten to be the part of a young artist.
Journey to the Unknown: Eve (1968) featured a story about a young man called Albert (Dennis Waterman) who sees in the display window of a department store an attractive dummy. It comes to life and smiles at him, he falls in love and so gets a job at the store as a dresser.
Of filming this movie, G.W. Bailey stated, "We didn't think it would ever be released. It was beyond silliness. We'd do outrageous double takes over the lines and say that we hadn't done this kind of stuff since high school. And the director would say, 'More. More. You're going in the right direction with it.' Going in the right direction! We didn't believe this. But suddenly the movie is released, and here's this old-fashioned, silly love story very loosely based on One Touch of Venus (1948) and there's not one dirty word in it, not one naked butt." The critics trampled the picture. The public, much to Bailey's surprise, loved it.
When Roxie & Armand are coming up the escalator to take pictures of Emmy & Jonathan, it appears they have ridden the escalator up. There clearly is a sign by the escalator saying it is a down escalator.