In "The Way You Look Tonight", Ginger Rogers is seen to be washing her hair. The crew tried various soaps, shampoos, and even egg white, but it always ran down her face too quickly. They achieved success with whipped cream.
Fred Astaire always insisted that his dance routines be filmed in one continuous camera shot, showing the dancer(s) from head to foot. However, in the "Never Gonna Dance" number, there is an obvious moment when Astaire and Rogers reach the tops of their respective winding staircases that the camera shot changes quickly to reflect the fact that the filming camera had to be brought upstairs to shoot the close-up finale of the dance number.
The film originally began with a musical number, "It's Not in the Cards," which was cut due the film's length and because the number was judged as not very good. Only a bit remains in the final version. The music is also used in the background during the first few scenes.