Maureen O'Sullivan is nude in the movie “Tarzan and His Mate” which was released in 1934. Maureen O'Sullivan shows nude boobs, arse and full frontal nudity there.
There is another nude scene. Around the time-mark 1:34:16, Jane (Maureen O'Sullivan) is shooting some lions when she runs out of bullets, so she crouches to gather some leafs, that's where you can see some bush when her loincloth moves.
This si not Maureen O'Sullivan she was claustrophobic and used a body double. This is actually Josephine Evelin McKim 1928 and 1932 Olympian Swimmer.
There is another nude scene. Around the time-mark 1:34:16, Jane (Maureen O'Sullivan) is shooting some lions when she runs out of bullets, so she crouches to gather some leafs, that's where you can see some bush when her loincloth moves.