How many movies have Kathy Hilton and Tricia Opal acted in together?

They have worked on 3 movies together! Their first movie together was Prison Babies (1973) while their highest rated movie together was Bucky's '70s Triple XXX Movie House Trailers Volume 2 (1994). They have not worked together since Bucky's '70s Triple XXX Movie House Trailers Volume 2 (1994).