Sophie, the Duchess of Edinburgh, has been seen out in public for the first time since a woman in her 80s was left fighting for life after being hit by her motorcade.
The duchess, who is married to the King's brother Edward, said earlier this week that she was "praying" for the woman, who is in a critical condition following the crash.
She was today seen at the Royal Windsor Horse Show in Windsor Castle, wearing a £2,097 floral dress for the occasion whole hiding under a large umbrella to avoid the rain.
The royal watched competitors in the Riding for the Disabled Fancy Dress Competition today in the Copper Horse arena.
An eyewitness to the crash earlier this week told the Mirror how the elderly woman had stepped out to peer around a junction before being thrown across the road near Earl's Court in London.
Paramedics from the London Ambulance Service and London's Air Ambulance attended the scene, and the woman was taken to hospital.
She remains in a critical condition and her family have been informed.
It is not immediately clear where the Duchess was travelling to, but it came a day after she hosted the Buckingham Palace garden party with the Prince and Princess of Wales.
In a short statement, Buckingham Palace said: "The Duchess’s heartfelt thoughts and prayers are with the injured lady and her family.
"She is grateful for the swift response by the emergency services and will keep abreast of developments.
"Further comment at this time would not be appropriate while the incident is being investigated."
Retired antiques dealer Martin Hennessy, 62, lives yards from the site and saw police cars swarming the scene.
He claimed the woman had stepped out in the road to peer around black curtains shielding a junction box when she was hit by the bike.
Mr Hennessy, who has lived there for 40 years, said: “She’s lucky to be alive at all. The road is a nightmare. We’ve warned the council about it. There have been three people killed here."