Cary Grant and Sylvia Sidney star in a screwball comedy about love and mistaken identity in Thirty Day Princess. When Princess Catterina (Sylvia Sidney) of Taronia falls ill with the mumps, it threatens to derail a business deal worth Million. Afraid of losing his commission, financier Richard Gresham (Edward Arnold) hires look-alike actress Nancy Lane (Sidney again) to impersonate the princess and promises a bonus if she can get crusading newspaper publisher Porter Madison (Cary Grant) to .if your download do not automatically please press button beloww