It’s the most revered and hotly anticipated night in the sartorial calendar; the Oscars of the fashion world. On the first Monday of May swathes of A-listers (anyone who’s anyone) head up the steps of the Metropolitan Museum of Art in New York (hopefully without a stumble) to attend the yearly ball hosted by Vogue’s Anna Wintour to raise money for the Met’s Costume Institute and celebrate the opening of their annual fashion exhibition.