Nicole Kidman has signed on the dotted line to star along English Twilight heartthrob Robert Pattinson in Bel Ami, a biopic of 19th Century French writer Guy de Maupassant. Maupassant famously slept his way though Parisian high society in the 1890s, bedding some of the city’s most influential women (one of whom is to be played by Kidman).