Duchess of Cambridge
The Princess of Wales said cancer was detected after her surgery earlier this year.
A spokesperson for the monarch said they have been in the "closest contact" in recent weeks.
The Princess of Wales’ younger brother, James, shared a sweet childhood photo in the wake of her health announcement.
The Princess of Wales spoke about her diagnosis and treatment in a video released on Friday.
Keir Starmer, Ed Davey and Humza Yousaf also spoke out in support of the Princess of Wales, while urging the public to respect her privacy.
The Princess of Wales said the news of cancer came as a "huge shock" to her and her family.
TMZ obtained footage of the couple visiting a business a mile from their home in Windsor over the weekend.
"The Kate Middleton reveal on Masked Singer is going to make all of us look silly."
Many folks posted their own hilariously manipulated photos on X using her phrase, "Like many amateur photographers, I do occasionally experiment with editing."
The Princess of Wales apologised over the Mother's Day photo.
About Duchess of Cambridge
Born on January 9 1982, the Duchess of Cambridge is five months older than Prince William. The pair married on 29 April 2011, having met at Scotland's University of St Andrews in 2001. The couple split briefly in 2007, but later reunited and became engaged during a holiday in Kenya to celebrate the Prince passing his RAF helicopter search and rescue course. On 14 January 2013, St James's Palace announced that the Duchess was expecting her first child in July 2013.