By Thom Poole, Peter Wilkinson, Laura Smith-Spark, Tori B. Powell and Elise Hammond, CNN
From CNN's Amy Cassidy
Princess of Wales' "strength and resilience inspire us all," French President Emmanuel Macron wrote in a post on X on Friday.
"Your Highness, In this difficult period you are going through, Brigitte and I wish you a full recovery. Your strength and resilience inspire us all," Macron said.
From CNN's Niamh Kennedy in London
James Middleton, the brother of the Princess of Wales, wrote a touching message on Instagram to his sister Friday after her shocking cancer announcement.
"Over the years, we have climbed many mountains together. As a family, we will climb this one with you too," Middleton's post read.
The 36-year-old entrepreneur shared an old family photo of him with his teenage sister.
From CNN’s Max Foster
Prince Harry and Meghan have sent their well wishes to Catherine, Princess of Wales, after she announced a cancer diagnosis Friday.
"We wish health and healing for Kate and the family, and hope they are able to do so privately and in peace," the Duke and Duchess of Sussex said in a statement.
From CNN's Arlette Saenz
US first lady Jill Biden posted a message of support on social media for Catherine, Princess of Wales, after the disclosure of her cancer diagnosis.
“You are brave, and we love you. ~Jill,” the first lady wrote on X while re-posting the video message from the princess earlier today.
From CNN's Max Foster and Lauren Said-Moorhouse
The video in which the Princess of Wales revealed her cancer diagnosis was filmed by BBC Studios at Windsor on Wednesday.
Kensington Palace is not expected to reveal any further medical details, such as the type of cancer or what stage it is.
The princess started preventative chemotherapy in late February, a royal source told CNN.
Kate had been expected to return to official duties after Easter. However, she will now postpone further work until she has been cleared by her medical team, the source said.
Prince William has been balancing supporting his wife and children while continuing his public-facing duties and will continue to do so, the source added.
From CNN's Max Foster
CNN understands the Prince and Princess of Wales wanted to wait for their young children to be out of school for the Easter vacation before announcing Catherine's cancer.
The couple have three children: Prince George, 10; Princess Charlotte, 8; and Prince Louis, 5.
Friday was the day their children began their Easter break.
“It has taken me time to recover from major surgery in order to start my treatment. But, most importantly, it has taken us time to explain everything to George, Charlotte and Louis in a way that is appropriate for them, and to reassure them that I am going to be OK,” Kate said in her video message.
From CNN's Peter Wilkinson and Max Foster
King Charles said he was "so proud of Catherine for her courage in speaking as she did" following the announcement by the Princess of Wales that she had cancer.
Charles, who was also diagnosed with cancer following a procedure for an enlarged prostate, remains in the "closest contact with his beloved daughter-in-law," Buckingham Palace said.
"Both Their Majesties will continue to offer their love and support to the whole family through this difficult time."
From CNN's Issy Ronald
Kate and William, whom she praised for the "comfort and reassurance" he had given her after her diagnosis, have been a couple for more than two decades.
They met while studying at the University of St. Andrews in Scotland and initially struck up a friendship. They began dating in 2003, around Christmas time, after she walked down the runway for a university charity fashion show wearing a see-through dress that, as the well-known story goes, captured the young prince's attention.
After graduating in 2005 with a degree in art history, Kate briefly worked as an accessories buyer for British women’s fashion chain Jigsaw, continuing to date William amid frenzied media attention until they split up in 2007.
Their split lasted only a few months, however, and they publicly announced their engagement in November 2010. Kate’s sapphire and diamond engagement ring originally belonged to Princess Diana.
Media coverage at the time focused on Kate’s middle-class upbringing in Berkshire, southeast England, the Middleton family, and her mother Carole’s career journey from flight attendant to successful entrepreneur, spinning a “fairytale” narrative of the first commoner in more than 350 years to marry a prince in the direct line of succession to the throne.
Much pageantry and fanfare accompanied their wedding at Westminster Abbey on April 29, 2011. Kate wore a custom-made Alexander McQueen dress, complete with such precise detailing that seamstresses had to replace their sewing needles every three hours, according to British Vogue.
Around 1,900 guests attended the ceremony while the British public were granted an extra public holiday to mark the occasion. Across the country, 24 million viewers -- about a third of the population -- tuned in to watch. The US viewership was estimated around 22.8 million.
From CNN’s Benjamin Brown
The head of England’s National Health Service (NHS) has said it was “really brave” of Catherine, Princess of Wales, to share her cancer diagnosis and that speaking publicly can help others get worrying symptoms checked.
Amanda Pritchard, Chief Executive of NHS England, said she was sorry to hear the “shocking news” and that her thoughts were with the royal family.
Pritchard said in a statement: "On behalf of the NHS, I'm really sorry to hear this shocking news.
"Our thoughts are with the Princess of Wales and the Royal Family, especially while her treatment continues. We know how difficult a diagnosis and treatment journey can be for patients and their families.
"Speaking out about it is really brave and it can help others to get worrying signs and symptoms checked. If you're worried about cancer, the NHS website has more information."
