Kensington Palace released the first official photo of Kate Middleton since her abdominal surgery on Sunday to mark a very special occasion: Mothers Day in the United Kingdom.

The new photo shows the Princess of Wales surrounded by her three children: George, 10; Charlotte, 8; and Louis, 5.

The photo was taken earlier this week in Windsor, just outside London, by Prince William (Kate is usually behind the camera for family photos).

In addition to the picture, Kate also shared a personal note of thanks on social media, which she signed C for her full name Catherine.

Thank you for your kind wishes and continued support over the last two months, she wrote. Wishing everyone a Happy Mothers Day.