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Kate Middleton’s brother celebrates her latest achievement in emotional Instagram post

Princess of Wales completed the National Three Peaks Challenge in support of cancer charity

Kate Middleton’s brother celebrates her latest achievement in emotional Instagram post
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© @princeandprincessofwales

StarsInsider
07/07/2026 09:15 ‧ 2 hours ago | StarsInsider

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British royal family

On July 5, Kate Middleton’s brother James Middleton shared an emotional Instagram post celebrating his sister for completing the National Three Peaks Challenge in June. The mountain-climbing challenge required the Princess of Wales to climb the three highest peaks in the UK in less than 24 hours.

The challenge was organized to raise funds for the Royal Marsden Cancer Charity and was completed by Kate while she was still undergoing cancer treatment. Her achievement had a personal touch to it, as James revealed that by completing the challenge she fulfilled a pact they made back in 2024 during her cancer journey.

"Seeing how far you’ve come is nothing short of inspiring," James wrote in his post. He also said that he was really proud of his sister for her accomplishment.

The Instagram post also featured photos of the siblings embracing, as well as a family portrait, where the two were seen posing together with their parents, Carole and Michael Middleton, as well as Kate’s husband Prince William and their three children: Prince George, Princess Charlotte, and Prince Louis.

Indeed, Catherine, Princess of Wales is one of the most inspiring and famous women in the world. She grew up as Kate Middleton, but her life changed when she met her future husband, William, who is expected to become King, which would make her the future Queen Consort. Still affectionately known as Kate by an adoring public, she's now a wife, mother, and "Her Royal Highness."

Browse the following gallery and revisit some of the highlights in the life of Catherine, Princess of Wales.

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