Cheering crowds and ecstatic racegoers greeted the Queen as she made a grand entrance to Royal Ascot.
She rode in a carriage with the Prince of Wales and the Duchess of Cornwall at the head of a procession which travelled along the course past stands packed with punters.
The famous five-day meeting is as much a social event as an important sporting fixture and attracts some of the best thoroughbreds, jockeys and trainers in the world.
Among the famous faces at the Berkshire racecourse on Tuesday were opera singer Katherine Jenkins, Bollywood star Aishwarya Rai Bachchan and BBC sports presenter Gary Lineker.
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Tuesday night's weather for the east of the region
Tuesday night's weather for the west of the region