Kate was pictured in the front seat of a Land Rover being driven by Prince William, with the couple’s son Prince George visible in the back seat.
The family was travelling to Crathie Kirk, the historic church on the Balmoral Estate which is frequently attended by the King during his summer trips to Aberdeenshire.
The princess, who has been undergoing treatment for cancer which was diagnosed in January, was last seen in public last month presenting the Wimbledon men’s singles trophy to Carlos Alcaraz.
She received a standing ovation from the crowd at SW1 after appearing alongside her daughter Princess Charlotte.
It was only the second time she had made a public appearance since her diagnosis, having previously joined King Charles for Trooping the Colour in June.
Today, she was wearing a camel coat and a hat with feathers in the band – identified by the Mail Online as a fedora from from Hicks & Brown which retails for £99.
The King and Queen were pictured in the back of a separate car on the way to the church.
A guard of honour was formed by soldiers from Balaklava Company, 5th Battalion Royal Regiment of Scotland, as the family entered the building.
King Charles has continued the tradition of spending the summer at Balmoral following his late mother, who would typically stay at the estate until deep into autumn.
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