7 Into Snowy (1977)

Starts with this skinny blonde, Snowy, bent over the sink in a bright bathroom. Guy’s got a solid build, dark curly hair, and chest hair—grabs her from behind, fingers her first, then slides in. She’s got those tan lines and a tight little ass, takes it like a champ. Then the other blonde joins, dark-haired girl with stretch marks on her hips, and they get into a 69 on the bathroom floor. Snowy’s on top, grinding her pussy into the other girl’s face while she eats her out. Camera’s right there, top-down shot, so you see everything. Later, guy comes back and fucks Snowy doggy style on the bed—she’s got her hands on the headboard, moaning like crazy. Good mix of girl-on-girl and straight action, and the bathroom lighting’s bright enough to see all the details.