Given the chance to grill Karl Lagerfeld, the king of fashion, where would you start? Is there ever a moment when it’s acceptable to lower the dark glasses? Why does he love black and white? What does he eat for breakfast? And that’s without even starting on the lifestyle secrets of Choupette the cat, star of Twitterverse. Thanks to the six collections a year Lagerfeld designs for Chanel, his influence over what we all want to wear is unrivalled. This season he’s launching the latest addition to his own empire (which already includes clothes, fragrances, eyewear, even a long-stemmed glass for his Diet Coke) – Karl Lagerfeld Paris, a collection of typically monochromatic, impeccably sharp tailoring and leather. We asked him the burning questions that have been on our minds for so long…