Jean Harlow arrives in Los Angeles as a teenager, pushed into showbiz by her mother and stepfather. Kindhearted agent Arthur Landau becomes Jean's mentor, while a devious Howard Hughes-like mogul grows infatuated with the beautiful young actress. Harlow herself falls for producer Paul Bern before tragedy strikes.
| Actor | Role |
|---|---|
 Carroll BakerJean Harlow | Jean Harlow |
 Red ButtonsArthur Landau | Arthur Landau |
 Raf ValloneMarino Bello | Marino Bello |
 Angela LansburyMama Jean Bello | Mama Jean Bello |
 Peter LawfordPaul Bern | Paul Bern |
 Mike ConnorsJack Harrison | Jack Harrison |
 Martin BalsamEverett Redman | Everett Redman |
 Leslie NielsenRichard Manley | Richard Manley |
 Mary MurphySally Doane | Sally Doane |
| HHanna LandyBeatrice Landau | Beatrice Landau |
 Peter HansenAssistant Director | Assistant Director |
 Kipp HamiltonMarie Tanner | Marie Tanner |
 Peter LeedsParker | Parker |
 Billy BletcherPoliceman (uncredited) | Policeman (uncredited) |
 Fritz FeldFritz (uncredited) | Fritz (uncredited) |
 Julie ParrishSerena Harrison (uncredited) | Serena Harrison (uncredited) |
 Dennis CrossDirector #2 (uncredited) | Director #2 (uncredited) |
| FFrançoise RuggieriBridesmaid (uncredited) | Bridesmaid (uncredited) |