party scene. The script  called for Hepburn to fall onto the bed and break into sobs, but  Stevens wanted her to walk to the window and cry, with the rain  falling outside. Hepburn could not produce the tears required, so  she asked Stevens if she could do the scene as scripted. Stevens  yelled furiously at Hepburn, which did the trick and the scene was  filmed Stevens way, and Hepburns tears are real.