Bert Kalmar and Harry Ruby were friends of Fred Astaire from their early days together in vaudeville. Astaire said the film was one of his all-time favorites.
Mrs. Carter De Haven, a Broadway star, introduced the song "Who's Sorry Now". In the film, Gloria DeHaven recreates her mother singing it.
Harry Ruby appears in a bit part as one of the baseball players. He is the one who catches the ball thrown by Red Skelton (as Harry Ruby) and tells "Ruby" to take it easy.
Near the end of the film, which is set in Southern California, Red Skelton as Harry Ruby says he's going to Wrigley Field to watch a doubleheader. He's referring to the original Wrigley Field which was in Los Angeles. (In that time period, present-day Wrigley Field in Chicago was called Cubs Park.)
In an interview, Arlene Dahl said that her solo "I Love You So Much" was difficult because she had to remember the song lyric while descending a staircase without tripping. She said that Fred Astaire used to stop by rehearsal almost every day and give her tips on how to do it.