Written by Vanessa Friedman Anna Wintour, the editor of Vogue and global editorial director of Condé Nast, has been the maestro of every Met Gala since 1999. But this time, it’s personal. Not just because the exhibition that the party honors is devoted to the work of much celebrated designer Karl Lagerfeld, who died in 2019, but because Lagerfeld was one of Wintour’s closest friends for decades. He created the clothes that, she said, “I’ve worn to the most important events in my life — to my wedding, to my children’s weddings, to Met Galas and state dinners and tennis…