Lina, a music hall singer, has fallen in love with Sergei, a Russian prince. Maestro Doria, who gives her voice lessons and who hopes to make her his mistress, takes her to Paris where she becomes the star of the "Folies-Plastiques".
| Actor | Role |
|---|---|
 Gina LollobrigidaLina Cavalieri | Lina Cavalieri |
 Vittorio GassmanPrince Sergei | Prince Sergei |
 Robert AldaMaestro Doria | Maestro Doria |
 Anne VernonCarmela | Carmela |
 Tamara LeesManolita | Manolita |
 Gino Sinimberghitenore Silvani | tenore Silvani |
 Nanda PrimaveraOlimpia | Olimpia |
| EEnzo BiliottiPerret | Perret |
 Marco TulliJudge at the duel | Judge at the duel |
| RRolf TasnaLefebre | Lefebre |
 Peter TrentViscount Turin | Viscount Turin |
 Loris GizziDuval | Duval |
 Nico PepeLouis | Louis |
| GGianni BaghinoEmilio | Emilio |
 Valeria FabriziSilvana | Silvana |
| GGuido RiccioliNot listed | Not listed |
 Mario Del MonacoNot listed | Not listed |