Claim: Best known for her role in the 1956 film Liane, Jungle Goddess, Marion Michael, was the second German actress to appear nude on film, after Hildegard Knef, a German actress, voice actress, singer, and writer, when she starred in the German film The Sinner in the 1950s.
Evidence: Marion Michael (17 October 1940 – 13 October 2007) was a German film actress and singer. She was best known for her role in the 1956 film Liane, Jungle Goddess. She was also the second German actress to appear nude on film, after Hildegard Knef when she starred in the German film The Sinner in the 1950s. Hildegard Frieda Albertine Knef (German: [ˈhɪl.də.ɡaʁt ˈkneːf (listen); 28 December 1925 – 1 February 2002) was a German actress, voice actress, singer, and writer. Her two best known film roles were "Susanne Wallner" in Wolfgang Staudte's film Die Mörder sind unter uns (The Murderers Are Among Us), produced in 1946 by the East German state film company, and the first film released after the Second World War in East Germany; and "Marina" in Die Sünderin (The Sinner), in which she performed a brief nude scene, the first in German film history, which caused a scandal in 1950.