Sarah Lane, a 22-year-old ballerina, doubled for Portman in "Black Swan." "I care only to speak the truth," said Lane. "The truth is that no one, not Natalie Portman, or even myself, can come anywhere close to the level of a professional ballerina in a year and a half. Period." For "Your Highness," Irish student Caroline Davis said she filled in as Portman's backside in the thong scene. She said she was paid approximately $400, which included taking a dive into the icy lake in Belfast.