ALL IN THE FAMILY: A small exhibition of Mario Testino’s photographs of the British royals is set to open at the National Portrait Gallery to mark Queen Elizabeth’s Diamond Jubilee. Eight portraits will be on display from Oct. 3 to Feb. 3, including the official engagement photograph of the Duke and Duchess of Cambridge taken in London in late 2010. The earliest pictures include an official portrait of Prince Charles from 2003, and one of Prince William taken to mark his 21st birthday. The portrait of Princes Charles, William, and Harry commissioned in 2004 for the family’s official Christmas card will also be on show. Testino said the first picture he ever took of the British royals was in 1981: He was standing in the crowd that gathered for the wedding of Prince Charles and Lady Diana Spencer. He snapped a picture of the Queen, Queen Elizabeth the Queen Mother, and Prince Edward as they passed by.