Chasey and Debi Diamond (the blonde chick from Debbi Does Dallas Again) team up for a threesome with Marc Wallice, I believe. The three switch positions and get severely screwed.  They are gettin it on by the side of a swimming pool. One turn on I thought was good was Debi's super-hot bikini tan-lines. Diamond always seems to get really into her sex scenes. The scene ends with Marc Wallice pulling out of Chasey's ripe pussy and pumping his load all over Debi's face. Peter North was huge and hard again. He has a scene with Chasey at the film's end which is sizzling. 

They fuck and suck on the couch until Peter culminates the scene with a gallon-gushing cum shot all over Chasey's stomach and tits!  Peter North's cum shot in this scene was probably the highlight of this film for a mega-semen aficionado like myself. 

With good directing, good production, and a fabulous cast of characters (notably Lain and North), Covergirl is a great movie to get your rocks off.