Picture - X Factor, Josh Cuthbert and Union J

"I've been told he might come to the premiere and I'm freaking out because he's the one person I'm going to meet and have no idea how to talk to. I've never met him. I'm genuinely nervous already. He's just this huge, like, genius. And I never in a million years thought I'd be in a Baz Luhrmann film with Leonardo DiCaprio, but with a soundtrack by Jay Z? Yeah, it's pretty amazing." Carey Mulligan is excited at the prospect of meeting Jay Z, who created the soundtrack to Baz Luhrmann's upcoming adaptation of The Great Gatsby, at the film's U.S. launch.