Forget the racing, as usual, it's all about the fashion - the Irish designer is once again the most in-demand man in millinery.
Queen Elizabeth led the royals accompanies by Camilla, the Duchess of Cornwall, at the head of a procession which travelled along the course past stands packed with punters.
Jenkins said she was attracted to the glamorous side of the event: "I love Royal Ascot, it's just so old-fashioned – old-fashioned glamour, old-fashioned traditions." The star wore a bright orange and pink hat by popular Irish milliner Philip Treacy and a matching dress. She added: "I would wear a hat every day if I could." The queen's horse Estimate will run in the Gold Cup tomorrow and is a favourite with some bookmakers.
A victory in the race would be a boost for the queen who will attend without the Duke of Edinburgh, who is convalescing at Windsor Castle after abdominal surgery.