Kate's brother sent a message of support after she was diagnosed with cancer

Family, friends, public send outpouring of support to Kate Middleton. The princess revealed she is being treated for cancer, spurring a massive outpouring from people around the world. NBC’s Molly Hunter reports and royal contributor Katie Nicholl provides analysis for TODAY.

Middletons are a tower of strength in looking after Kate's children. Carole is playing a 'crucial' role in caring for her grandchildren. It is understood she will continue to provide hands-on support for Kate's family. She was spotted driving Kate on the school run this month.

James, 36, took to Instagram to share a childhood photo with the Princess. He said: 'Over the years, we have climbed many mountains together. As a family, we will climb this one with you too' Kate Middleton's brother sends message of support after cancer news.

Kate, the wife of Prince William, is one of three siblings. Kate's mother, Duchess of Cambridge, had surgery to treat a kidney failure. Kate has been married to Prince William for more than 20 years. Kate is one daughter of Prince Harry and Prince William.