How many movies have John Holmes and Kathy Hilton acted in together?

They have worked on 6 movies together! Their first movie together was Sex and the Single Vampire (1970) while their highest rated movie together was Sex And The Single Vampire And The Lost Films Of Sandy Dempsy (1972). They have not worked together since Bucky's '70s Triple XXX Movie House Trailers Volume 2 (1994).