Petra Nemcova arrived at 'The Black Dahlia' premiere with Nat Rothschild NOT James Blunt. Rumors started to swirl when onlookers noticed the two would not leave each other's side the entire evening (including the after party). Who is Nat and why would Petra be interested in him? He is the co-chairman of Atticus Capital and is worth over $500,000,000. But with the good always comes the bad. He is notoriously known as a playboy. Decisions... decisions.