The Prince and Princess of Wales will not be attending Easter services with the rest of the royal family.
The Duke and Duchess of Sussex also shared a public statement in support of Kate following her announcement.
The royal couple issued a joint statement via Buckingham Palace on Saturday.
Charles's message was succinct but also incredibly well received.
The 'Beverly Hills, 90210' alum also offered a heartfelt message to the Princess of Wales.
Goldsmith was slated to appear in the final Friday night but pulled out 'following today's news.'
Following Kate Middleton's cancer diagnosis, Dr. Jeremy Jones, medical oncologist at Mayo Clinic, breaks down possible treatments.
ET breaks down the events that have led up to Kate Middleton announcing her cancer diagnosis.
ET spoke with Dr. Jeremy Jones from the renowned Mayo Clinic to get answers on Kate Middleton's cancer treatment.
The Princess of Wales announced her cancer diagnosis on March 22.
In an emotional video, Kate Middleton revealed that she was recently diagnosed with cancer.
Katie Couric, Jill Biden, Prince Harry, Olivia Munn and more have expressed their support for the Princess of Wales.
In an unprecedented crisis, three members of the royal family have shared their cancer diagnoses.
Kate Middleton and Prince William 'struggled' to tell their children about Kate’s cancer diagnosis, according to an ET source.