Also in 2009 , she appeared as Edward Norton 's pregnant fiancée in '' Leaves of Grass '' , and as George Clooney 's younger sister in '' Up in the Air '' . The latter was nominated for Best Picture at the 82nd Academy Awards . The film 's director , Jason Reitman , had never before cast a foreigner to play an American character , but Lynskey said that she " tricked " him into giving her the part by not speaking to him during her audition , therefore concealing her native accent . Reitman said he was " thrilled " by this . In October 2009 , Lynskey was presented with a Spotlight Award at the Hollywood Film Festival
Hollywood Film Festival
Hollywood Film Festival
Melanie Lynskey