The Queen had a clapperboard moment as she visited the set of raunchy TV drama, Rivals, and revealed binge-watching the series had cheered her up while she was ill with pneumonia last year.
Camilla, 78, was given a behind-the-scenes tour of the set in Bristol on Monday and met the show's stars, including Alex Hassell, David Tennant, Nafessa Williams, Victoria Smurfit and Bella Maclean.
The Disney+ series is based on the books by author Dame Jilly Cooper, who died aged 88 in October after sustaining a fatal head injury during a fall at her Gloucestershire home.
Following her death, the Queen paid tribute, describing her as a "legend" and a "wonderfully witty and compassionate friend to me and so many".
The pair were long-standing friends, and the author is said to have based her fictional seducer and showjumping lothario, Rupert Campbell-Black, partly on the Queen's ex-husband Andrew Parker Bowles.
Camilla observed filming from the upcoming second series and used the clapper board for a scene on the 'Master Dog' set with actor, Oliver Chris, who plays TV presenter James Vereker.
WATCH: Queen Camilla has a clapperboard moment on the Rivals set
On the set of the fictional O'Hara family's kitchen in The Priory, Camilla spoke with Alex Hassell, who plays Ruper Campbell-Black.
"Hello! How nice to see you," the Queen said. "I've watched you all. It looks really fun."
"It's really good fun and actually we all get on very well, which makes all the saucy stuff not too awkward. We struggle [not to laugh]. In fact, we were doing it earlier today. When we have to look at each other in a yearning fashion we find each other hilarious. The more you're not supposed to do it [laugh] you do," Alex replied. "I suppose you must have found yourself in those positions quite a lot."
Camilla later admitted she had read all of Dame Jilly's books.
Victoria Smurfit, who plays Maud O'Hara, asked: "Did you fact check them for just how delicious the men were and all the horses?"
"No," the Queen replied tactfully. "Interesting memories… But I galloped through them. It's just good fun. And I think nowadays people need some good fun. People want to be lifted, don't they? And just be able to have a good laugh.
"I remember watching it last year when I was ill, I had pneumonia. I promise you, I binge-watched it and felt much better afterwards. I'm looking forward to this one coming out."
During the visit on location in Bristol, Camilla learned how the production has been a boost for creative industries in the South West of England, providing training and opportunities for young people.
She also met with members of Dame Jilly's family and toured the costume department, which showcases the 1980s style and fashion of the era.
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The Princess of Wales was seen formally greeting her stepmother-in-law as she and Prince William arrived in Windsor with Germany's President Frank-Walter Steinmeier
