In a series of live action and animated vignettes, the evolution of humanity is depicted and explored, primarily through the experiences of Cathy, a tour guide in a natural history museum, and Lee, a college student infatuated with her.
The two stars (seen here) were Ms. Principal and the kid from The Rifleman, who was also one of the original Mouseketeers.
Video (It’s from a Blu-Ray, but it’s much too dark to see anything.)

There was a Playboy spread of her at the time to promote the movie. They showed a whole lot more.
There was also a BBC documentary from the Desmond Morris book, The Human Animal, and can you imagine making a documentary series from ethology book in America, where it shows full frontal public nudity right at the beginning?
Your readers might not be familiar with it, but it’s worth checking the first minute here
The whole documentary is great BTW, so great content with great nudity.
Great body on the woman. It deserves a promotion to post, imo.
She deserves a medal of honor for putting up with Andy Gibb’s alcoholism and drug abuse. From what I’ve heard, he was wildly out of control for years, but she stuck with him, despite being the hottest woman on TV who could have anyone she wanted. She eventually told him to choose between her and his bottle, and he chose the booze. Sadly, she later married a bad plastic surgeon who turned her face into something unspeakably grotesque.