The Bitter Tears of Petra von Kant (German: Die Bitteren Tränen der Petra von Kant) is a 1972 West German psychological romantic drama film written and directed by Rainer Werner Fassbinder, based on his play of the same name. Featuring an all-female cast, the film takes place entirely in the home of fashion designer Petra von Kant (Margit Carstensen), following the changing dynamics in her relationships with other women. The film was entered into the 22nd Berlin International Film Festival. It is regarded by many as Fassbinder's magnum opus and a classic of New German Cinema.