Rare footage of the Queen running and letting her guard down watching her favourite sport has been widely shared.
The clip from the 1991 Derby showed Her Majesty dashing to the balcony at Epsom to see Generous take the big race.
In her 60s at the time, the Queen looked through her binoculars to see the horse record a memorable five-length victory. The footage, from 1992 BBC documentary Elizabeth R, revealed how the colt was her horse in the Royal Family's annual sweepstake.
Wearing a purple coat and matching hat, the Queen started watching the 1m 4f contest on a TV monitor, until she wanted a closer look. Racing's biggest supporter joined the Queen Mother outside to view the closing stages of the Classic contest.
"That's my horse, isn't it? That's my horse!" the Queen said. "Oh my god, Mother! We won!"
The Queen was then presented with her winnings from the Royal Box sweepstake. "What do I get"' she asked. "Well, you get 16, Ma'am," the aide replied.
"Sixteen pounds! Oh!" said the Queen, smiling to the camera.
Ahead of the state funeral on Monday, watched by an estimated television audience of four billion, there were many fond tributes from the world of horse racing.
As well as Epsom, Britain's longest-reigning monarch used to attend Royal Ascot every year. Another video showed her elation as her horse Estimate scooped the meeting's main prize, the Gold Cup, in 2013.
Shortly before a national minute's silence at 8pm on Sunday, Queen Consort Camilla reflected on her love of competing and breeding thoroughbreds.
'She was able to escape to Sandringham. She had the stud next door. She could go every day, see her foals, work out you know, the next meetings for the year. I think she always kept that as you know, her, her private bit," Camilla said on the BBC broadcast.
'You wouldn't dare question her or argue with her on how horse are bred or how it ran because you'd get a very steely blue-eyed look back again.'
Camilla is expected to take the reins of the Queen's favourite hobby, which gave her 24 winners at Royal Ascot and four out of the five British Classics.
Her bloodstock adviser John Warren said in the days leading up to the Queen's death on September 8, she was making plans for her horses while staying at Balmoral. He added that she had been delighted with her winner at Goodwood that week, a filly named Love Affairs, as well as spending time with her family.
"She really loved having them right there with her and being able to talk about her horses and her love for her horses right to the very end," Warren said.
He told how the Queen was quick to greet Estimate at Ascot nine years ago.
"The Queen was absolutely steadfast to get to Estimate herself and give her a wonderful and well deserved pat," he said.
"That was a hugely touching thing to witness, The Queen just focusing purely on this creature that had delivered for her. That was remarkable."
The Queen will be laid to rest in a private ceremony in Windsor's King George VI Memorial chapel on Monday evening, alongside her husband, the Duke of Edinburgh.
