This was the week that the rulebook was thrown out the window. Scratch that — it's been burned and the ashes have been buried. It's that extreme. Celebrities internationally are refusing to play by the fashion rules. Denim? It's not playing safe. Underwear? Not staying under wraps. And don't get us started on swimwear… See how Atlanta de Cadenet, Hanneli and Rihanna are starting the revolution below.