The King Charles and the Queen Camilla with the Duke and Duchess of Wellington

on Monday, the royal couple attended the first day of the horse racing event at the Ascot Racecourse on June 18. They led the way in the Royal Procession, which typically marks the start of every race day. Four horse-drawn carriages entered the racecourse at precisely 2 p.m. local time to kick off the event.

King Charles, 75, looked dapper in a suit and top hat, following the event’sfor the Royal Enclosure. Men are asked to sport morning dress (in black, grey or navy only) with a waistcoat and necktie (“patterns of a patriotic nature, for example a national flag, are acceptable,” the dress code states). Black or grey top hats are required but can be removed when inside a restaurant, private box or seating areas. Socks must cover the ankle.

Queen Camilla, 76, sported a blue ensemble by one of her go-to designers Fiona Clare with a coordinating hat.