Frank Sinatra has sex with Ava Gardner and we see her butt. She then gets out of bed and holds a shirt over her crotch. We get brief glimpses of her pubic area.
There is a montage consisting of several characters having sex in separate hotel rooms:
Sammy Davis, Jr. is seen kissing and caressing May Britt while lying on top of her. A bed sheet covers any nudity.
John F. Kennedy has sex with Judith Exner while she is on top of him. We see her bare back and her breasts are partly visible.
Peter Lawford has sex with a woman while standing up and thrusting repeatedly.
Frank Sinatra is shown in bed with two topless women and he kisses both of them.