Russell Brand was reportedly told off by Billy Connolly after he refused to start filming until a wardrobe girl flashed her breasts at him.
The comedian's demand delayed shooting on the first day for two hours, so the assistant eventually gave in for the sake of the schedule.
The 37-year-old - who had a stint in sex rehab - was filming Eric Idle's musical 'What About Dick?' in Los Angeles with fellow comedians Billy, 69, and Eddie Izzard, 50.
A source told The Sun newspaper: ''It was just a bit of fun. Billy got annoyed when he found out and gave Russell a stern ticking off.''
The insider continued: ''Russell tried to persuade a wardrobe assistant to show him her breasts but she was having none of it - at first.
''But when it started to look like they weren't going to get any work done she gave in and flashed him. Russell is a charming scoundrel and everybody let him get away with murder on set - except Billy.
''But after their heart-to-heart he settled down and gave a great performance and filmed the scenes like a consummate professional.''