 In 2002 , Green had her film debut , when director Bernardo Bertolucci cast her for the role of Isabelle in The Dreamers ( 2003 ) , which involved her in extensive full frontal nude scenes and graphic sex scenes . Green told The Guardian that her agent and her parents begged her not to take the role , concerned that the film would cause her career to " have the same destiny as Maria Schneider " , because of Schneider 's traumatic experience during the filming of Bertolucci 's Last Tango in Paris . Green said that with Bertolucci 's guidance she felt comfortable during the filming of the nude and sex scenes but was embarrassed when her family saw the film . Her performance was well @-@ received , and some compared her to Liv Tyler . Green expressed surprise when a minute was cut from the film for the American market , stating , " [ T ] here is so much violence , both on the streets and on the screen . They think nothing of it . Yet I think they are frightened by sex . " Her next film was Arsène Lupin ( 2004 ) , in which she portrayed Lupin 's love interest . She enjoyed the light @-@ hearted role , although she has stated that she generally prefers more complex characters . 
