The couple was photographed in their car together on the way to an appointment.
Kate Middleton has been spotted out in public for the second time since her planned abdominal surgery, this time with her husband, Prince William. On Monday, the Prince and Princess of Wales were spotted out in a car together in Windsor, England.
A royal source tells ET that the Princess of Wales was on her way to a private appointment when she was seen with the father of her three children in their car.
Kate was seen for the first time since her January hospitalization earlier this month. In a photo taken a week ago, she was shown wearing sunglasses while riding in a black SUV driven by her mother, Carole Middleton. An eyewitness told ET at the time that Kate and her mother were spotted in their vehicle around 9 a.m. just outside London. "The princess was low-key, looking out the window as her mother paid attention to the road," the eyewitness said.
On Monday, William had a busy day. In addition to accompanying his wife to her appointment, he also attended the annual Commonwealth Day Service at Westminster Abbey in London.
He was joined by his stepmother, Queen Camilla, and several other members of the royal family including Prince Edward and his wife, Sophie.
In addition to Kate, William's father, King Charles III, was also absent from the event due to his ongoing cancer treatment.
Meanwhile, the mystery surrounding Kate's seemingly manipulated Mother's Day portrait isn't getting any clearer.
ET has learned that Kensington Palace has no plans to reissue the original unedited portrait of the Princess of Wales and her three children that was released on Sunday for British Mother's Day.
The palace originally claimed that the image was taken by William in Windsor, England, last week, but after multiple news outlets, including the Associated Press, pulled the image claiming it was "manipulated," Kate released a statement on social media admitting the image was edited.
"Like many amateur photographers, I do occasionally experiment with editing," Kate wrote in a message on Monday. "I wanted to express my apologies for any confusion the family photograph we shared yesterday caused. I hope everyone celebrating had a very happy Mother's Day. C."
Speculation surrounding Kate's health has been swirling in recent months after the mother of three went in for a "planned abdominal surgery" in January. The palace did not disclose exactly what the surgery entailed, but noted that the princess would not be returning to royal duties until after the Easter holiday.
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