Camilla pictured at York Racecourse as Queen leaves King Charles at Balmoral

The royal, 77, cut an elegant figure in a light blue coat dress designed by Fiona Clare with floral embellishment.

Camilla paired her outerwear with a tan hat designed by Philip Treacy, and opted for minimal makeup for the occasion.

The Queen completed her race day ensemble with a blush pink leather bag and nude kitten heels.

During Saturday's visit, Camilla opened the Bustardthorpe Stand, designed to improve racegoers' experience. It has rainwater harvest tanks, solar panels and a living roof.

After cutting the ceremonial ribbon, Camilla was taken on a tour of the grounds before taking her spot in the royal box.

The royal, who has a lifelong love of horses, was seen holding a pair of binoculars as she paid close attention to the races.

The Queen had several facial expressions, varying between delight and frustration as the races unfolded.

The royal also presented the trophy to the winner of the Ebor Handicap, which dates back to 1843.

Saturday marked the first time Camilla visited the racecourse in her capacity as royal patron - a role which used to belong to Prince Andrew.

Camilla's engagement comes after her surprise appearance at the racecourse on Friday.

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The royal was seen with William Derby, York Racecourse's chief executive, and wearing her ruby, diamond and sapphire horseshoe brooch.

The brooch is also set with letters spelling out the name "Minoru", one of King Edward VII's most successful horses.

Like her late mother-in-law, Queen Elizabeth II, Camilla is known for her love of horses.

She is thought to have taken over the day-to-day running of the late Queen’s stables rather than King Charles.