Rainer Werner Fassbinder wrote the entire screenplay for the film by hand during a single 12-hour flight from Berlin to Los Angeles.
The painting covering the wall in Petra's apartment is a gigantic blowup of Nicolas Poussin's 1629 painting "Midas and Bacchus."
Film was shot in ten days.
Even if male characters are mentioned or described, like Petra's husband, Karin's lover, and Karin's husband, etc., throughout the whole movie no men are shown, only women.
The actresses portraying Petra and her young upstart model protégé Karin are less than four years apart.