Kidman and Paltrow up for "The Aviator"?

According to the IMDB, Nicole Kidman has been approached by esteemed director Martin Scorsese to depict legendary star Ava Gardner in a new film about the life of Howard Hughes. Leonardo Di Caprio will have the role of Hughes in the film, called "The Aviator". Hughes, aside from being head of RKO Pictures was a noted flyer, entrepreneur and lover of some of Hollywood’s most glamorous women, including Gardner and Katharine Hepburn. Gwyneth Paltrow has also been approached, to play Hepburn.