Anna Wintour, Lionel Richie and Martha Stewart were among the guests at King Charles’ star-studded charity gala in New York.​ The Greater Together Reception drew a slew of American and British celebrities to the event Wednesday evening, hosted by the royals on their week-long visit to the U.S. The evening celebrated the 50th anniversary of the King’s Trust , with the monarch also promoting transatlantic ties during his speech in the halls of Christie’s in Midtown Manhattan.​ King Charles III held a glamorous gala in New York City, attended by celebrities including Anna Wintour (Getty) Wintour also met with Queen Camilla (Reuters) Wintour , who paired a cream-colored trench coat with her signature sunglasses, was not the only big name in fashion to appear at the event. Designers Donatella Versace and Stella McCartney , as well as supermodels Iman and Karlie Kloss , were also spotted at the gala.…