In her first major public engagement since announcing her chemotherapy treatment had ended, Princess Catherine shares a touching moment with a young teen with a rare form of cancer.

Scans revealed tumors on Hatton's ovaries and liver after she experienced abdominal pain over Christmas. Only about a dozen people are diagnosed with the aggressive form of cancer in England every year, according to cancer charity Sarcoma UK, and no standard treatment regimen exists.

The Prince and Princess of Wales invited a 16-year-old battling cancer to Windsor Castle for a very special role.

The Princess of Wales posted a photo of herself hugging 16-year-old Liz Hatton around a month after finishing chemotherapy.

Princess Catherine and Prince William helped a teen photographer battling cancer check an item off her “bucket list” Wednesday at Windsor Castle. Liz Hatton, 16, was diagnosed with a rare and aggressive form of cancer in January.

Kate Middleton welcomed Liz Hatton, a 16-year-old girl with a rare and aggressive form of cancer, to a private meeting at Windsor Castle where they shared their cancer journeys and their love of photography.