Article continues below advertisementJennifer Lawrence is being hailed as "Hollywood's new Jack Nicholson" following her performance in Die My Love, OK! can reveal. The 35-year-old actress has left colleagues stunned on set with what one source described as a "completely unhinged" approach to her role as a new mother spiraling into postnatal depression.The film, directed by Scottish auteur Lynne Ramsay, is an adaptation of Ariana Harwicz's 2012 novel and was shot in a remote Montana cabin.