During a love scene, Billie (Linda Thorsen) shows her right breast and nipple. This appears to be accidental. In other words, this may be a nip-slip.
In a two and a half minute sex scene, we see Natasha's (Michelle Phillips') breasts, buttocks, and pubic hair. We also see Rudolf Valentino's (Rudolf Nureyev's) buttocks, penis, and scrotum. His scrotum is seen both in full frontal nudity and from behind between his legs.
During a two and a half minute sequence Rudolf Nureyev's genitalia is fully visible most of the time. Near the beginning of the sequence in a gratuitous shot, Nureyev's testicles are see dangling beneath his buttocks. By comparison, Michelle Phillips' breasts and pubis are entirely obscured from view the majority of the time by the strategic placement of her exceptionally long hair and the elevated positioning of her thighs. There is a very short sequence where her merkin (pubic wig) is largely visible but limited from view due to the close togetherness of her thighs.
In one love scene, Lorna (Penelope Milford) begins to remove her dress. Her bare breasts and nipples are quite visible. She appears to be totally nude except for a garter belt and stockings. After she lies on the bed with Rudolf Valentino (Rudolf Nureyev), she hides under the cover while removing the rest of her clothing. Her breasts, buttocks and pubic hair are on full display. It is possible that we see glimpses of her labia majora.