A behind the scenes snap has shown the Duchess of Cambridge at work capturing images of the Duchess of Cornwall for her Country Life magazine cover.
And it seems her pictures caused a struggle for the editors of the publication - as they had difficulty narrowing down her photos to just three final images.
The new photo shows Kate in the garden of Camilla's Wiltshire home Ray Mill House bending down as she tries to capture the perfect shot of her stepmother-in-law.
Camilla can also been seen, donning a blue floral dress, standing next to a water feature in her garden, posing for the camera.
And Country Life's managing and features editor, Paula Lester, said the magazine were delighted with Kate's pictures after Camilla personally commissioned her.
She told the magazine : "The Duchess of Cambridge took our cover images at the request of our Guest Editor, The Duchess of Cornwall, and we could not be happier with the results — in fact, the set of images she took was so good that we struggled to choose only three, from which The Duchess of Cornwall made her final selection.
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"The Duchess of Cambridge took her commission very seriously and was incredibly professional about the task at hand.
"She phoned me to discuss our requirements for the cover and subsequently composed a range of beautifully shot images."
Camilla commissioned Kate after she was asked to guest edit the latest edition of the publication to mark her 75th birthday later this month as well as the magazine’s 125th anniversary.
Kate is a keen amateur photographer, regularly releases pictures she has taken of her children to mark their birthdays and is patron of the Royal Photographic Society.
Mark Hedges, editor-in-chief of Country Life magazine, said: “We are thrilled to have our guest editor captured so magnificently by royal photographer the Duchess of Cambridge.
“We understand this is the first time a formal portrait of the Duchess of Cornwall has been taken by the Duchess of Cambridge for a magazine and we are honoured to have been chosen to be the first to publish this beautiful photograph.
“The photographs are superb and we would be delighted to offer the Duchess of Cambridge another commission!”
The duchess is the fourth royal guest editor, following Charles, who has twice led the magazine – to mark his 65th birthday in November 2013 and his 70th in 2018, the biggest selling issue of all time.
In 2020, the Princess Royal masterminded the July 29 issue – another bestseller – to commemorate her 70th birthday.
The edition of Country Life edited by Camilla will be published on July 13.