Barbarella put his record at three for three.
The latter film stars Erica Gavin and Cheryl Rainbeaux Smith, and was directed by Jonathan Demme, who would go on to helm Silence of the Lambs 1991.
Her most recent nudity, another bathtub boob reveal, took place in The Banger Sisters 2002.
Stick with this version to see Keeley.
There, she skinny-dips with lesbians who overpower and gang-bang her on the beach.
Now in her 60s, Helen looks as sumptuous as ever.