Ronny on AllMovie

Kaethe Von Nagy stars as Ronny, a pretty costume designer in the mythical European kingdom of Perusa. Willy Fritsch co-stars as the Perusian prince, who also dabbles in composing operettas. When the star of the Prince's latest extravaganza walks out, Ronny goes on stage in her place, becoming an overnight sensation. Sensing that the Prince is in love with the girl, his faithful prime minister (Willi Grill) tries to train Ronny to become an acceptable court mistress (as a commoner, she could never become his wife). But both Ronny and the Prince object to this, preferring to make their relationship legal -- and permanent. This is the sort of German musical in which even the Royal Army dances in unison.