Magnificent Sinner

Katia
Theatrical release poster
Directed by	Robert Siodmak
Screenplay by	Georges Neveux Charles Spaak
Produced by	Michel Safra
Starring	Romy Schneider Curd Jürgens
Cinematography	Michel Kelber
Edited by	Louisette Hautecoeur Henri Taverna
Music by	Joseph Kosma
Production company	Spéva Films
Distributed by	Cinédis
Release date	20 January 1960 (1960-01-20)
Running time	96 minutes
Country	France
Language	French

Magnificent Sinner (original French title: Katia) is a 1959 French drama historical film by director Robert Siodmak about the romance between Tsar Alexander II of Russia and the then-schoolgirl Catherine Dolgorukova, who later became his mistress and finally his morganatic wife. It stars Romy Schneider as Katia, a schoolgirl who becomes the Tsar's mistress and Curd Jürgens as Tsar Alexander II of Russia. The film, originally released as Katia, was a remake of a 1938 French film of the same name, which starred Danielle Darrieux.