During filming , Monroe 's make-up artist Whitey Snyder noticed her stage fright . The director made him spend hours gently comforting Monroe as she prepared to film her scenes .
During filming , Monroe 's make-up artist Whitey Snyder noticed her stage fright ( that would ultimately mark her behavior on film sets throughout her career ) ; the director assigned him to spend hours gently coaxing and comforting Monroe as she prepared to film her scenes .