Britain's Sophie, Countess of Wessex (L), Britain's Catherine, Duchess of Cambridge (2L), Britain's Prince Edward, Earl of Wessex (2R) and Britain's Prince William, Duke of Cambridge travel by horse-drawn carriage to arrive on day one of the Royal Ascot horse racing meet, in Ascot, west of London, on June 20, 2017. The five-day meeting is one of the highlights of the horse racing calendar. Horse racing has been held at the famous Berkshire course since 1711 and tradition is a hallmark of the meeting. Top hats and tails remain compulsory in parts of the course while a daily procession of horse-drawn carriages brings the Queen to the course. / AFP PHOTO / Daniel LEAL-OLIVAS (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)