Joan Crawford does a cameo and directs a short speech to Jack Carson before slapping his face. It's the same one she gives to Ann Blyth in Mildred Pierce (1945) before slapping her face. Carson co-starred in that film with Crawford.
Patricia Neal, still wearing the black fur-trimmed evening gown from The Fountainhead (1949) came directly from that set to film her ballroom scene cameo.
Doris Day did not consider this film as much of a picture, but she was enjoying the role of movie actress and it came naturally to her. She also liked the regular hours of the studio, compared to the late night hours she had spent on the bandstand for several years.
Both William H. O'Brien and William J. O'Brien appear in this film (uncredited) as saloon waiters.
The green-and-black striped gown Day wears in the scene where she poses as a French starlet recently signed by Warners had previously been worn by Janis Paige in Hollywood Canteen when she danced with Dane Clark, and by Eve Arden at Ann Blyth's birthday party in Mildred Pierce.