The Princess of Wales has shared a sweet tribute to her family after completing the gruelling Three Peaks Challenge - as her brother issued an emotional message about their shared 'promise' and the 'healing power of nature'. Catherine, 44, looked the part in a heartwarming post uploaded to Instagram as she was seen sporting a pair of red shorts and a baseball cap, surrounded by those closest to her. She captioned the images: 'This time last week, completing the National Three Peaks Challenge. A huge thank you to everybody who has supported The Royal Marsden Cancer Charity.' All three of her children were out in full force to show their support – with Charlotte, George and Louis each wearing their own practical pair of blue jeans as they smiled for the camera. #princessofwales #royals #fyp #royalfamily