There's a thin line between Kim Cattrall and Samantha Jones, the character she played on Sex and the City. The 52-year-old actress, who frequently bared all for the show, is doing it again, this time in support of one of her favorite artists. Cattrall is sitting nude for a recreation of Titian's Diana and Actaeon, which is in jeopardy of being pulled from public view from London's National Gallery. Photographer Tom Hunter is campaigning to raise £50 million to keep the masterpiece on display, by responding to a BBC Two challenge to create a 21st century version of the painting. Cattrall, who is featured as Diana, held her own among lean 20-something art students from the Courtauld Institute and performers from the burlesque show La Clique.