Barbra Streisand and Robert Redford film a love scene in The Way We Were:
Barbra was nude from the waist up when she undressed, her back to the camera. The next shot would show her already in bed, and she wore a thin mesh bikini and brassiere under the sheets. With his character supposed to be nude as well, Redford was taking no chances. According to Moss Mabrey, the film's costume designer, "Redford put two jockstraps on for that scene. He's a very modest man. He was afraid of getting an erection."
The bulky athletic supporters caused a problem, however, when their outline became visible through the sheets. "Finally," Redford said, "I took them off under the cover, slid them under the bed, did the scene, picked them up, and put them back on under the cover" before getting out of bed.
The look of ecstasy on Barbra's face in the scene likely reflected reacting more than acting. Because by this time her feelings toward Redford were just as strong as Katie's for Hubbell.