Trivia

Initially, Jeremy Irons had two separate dressing rooms and two separate wardrobes which he would use depending on which character he was playing at the time. Soon he realized that "the whole point of the story is you should sometimes be confused as to which is which," after which he moved to a single dressing room and mixed the wardrobes together, and found an "internal way" to play each character differently, using the Alexander technique to give them "different energy points," which gave them slightly different appearances. See more