Wearing a real diamond, reproduction of the spectacular necklace designed for Nicole Kidman in Moulin Rouge, this one-off Barbie edition was created by jeweller Stefano Canturi on the condition that she was auctioned to raise funds for the Breast Cancer Research Foundation. The iconic doll's October 2010 sale at Christies in New York raised $302,500, setting a new record for the world's most expensive Barbie.