Austin Butler chats with ET at the London premiere of 'Dune: Part Two,' in theaters on March 1. The actor says he feels 'fortunate' joining the second installation of the blockbuster sci-fi, after admitting he was an 'enormous fan' of the first film. Plus, Austin reacts to girlfriend Kaia Gerber joining her mom, Cindy Crawford, on British Vogue's '40 Legendary Women' cover.