A Girl's Best Friend (1981)

 (1981) The story involves a hectic and hilarious chase as Mrs. Leautrec and her dashing son, Paul, stalk three beautiful diamonds, using love and lust as tools of their trade. Finally, at a masquerade party the partygoers publicly pursue their perversions and Paul and his mother become ensnared in an incestuously devious trap. Starring Juliet Anderson, Ron Jeremy,Veronica Hart & Samantha Fox.