During a particulary dismal dress rehearsal of Dorothy Parker's play
Close Harmony one day, the producer took the playwright aside to express his concern about the unusually well-endowed leading lady.
"Don't you think," he whispered, "she ought to wear a brassiere in this scene?" "God, no," Parker replied. "You've got to have something in the show that moves."
Sources
Dorothy Herrmann, With Malice Toward All