Racegoers walk through The Royal Enclosure during the fourth day at Royal Ascot, in Berkshire on June 19, 2015. 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 / ADRIAN DENNIS        (Photo credit should read ADRIAN DENNIS/AFP/Getty Images)