On the eve of Berlin Fashion Week, a group of bloggers, journalists and Berlin celebrities have gathered at Colette, the brasserie run by star chef Tim Raue. They were invited by Vreni Frost, one of Berlin’s first and foremost fashion bloggers. There’s boeuf bourguignon and nougat mousse, and it just so happens that Sahra Wagenknecht and Oskar Lafontaine – a powerhouse left-wing couple and two of Germany’s most famous political …