Culture U.K. Meghan Markle The Duchess of Sussex, Meghan Markle, made her first public appearance Saturday since giving birth to her son, Archie Harrison Mountbatten-Windsor last month. The American-born royal attended the traditional Trooping the Colour—the Queen’s birthday parade—with her husband, Prince Harry.The Markle and Harry, who celebrated their first wedding anniversary last month, welcomed their first child on May 6. Apart from an appearance when the couple introduced newborn Archie to the world days after his birth, Markle and her son have remained out of the public eye, according to Buzzfeed.Trooping the Colour has marked the official birthday of the British Sovereign for over 260 years. Queen Elizabeth II turned 93 on April 21, but Trooping the Colour, which is usually celebrated the second Saturday of June, is the official celebration of the monarch’s birthday and her ongoing reign.Prince Philip, the Duke of Edinburgh, has retired from official public duties and apparently did not attend the event. He celebrates his 98th birthday on Monday.Markle rode in a carriage alongside Harry, his stepmother, Camilla, the Duchess of Cornwall and her sister-in-law Kate Middleton, the Duchess of Cambridge. The actress-turned-duchess reportedly wore a navy Givenchy outfit by her wedding dress designer,…