May 2 (UPI) -- Britain's Prince William and his wife Kate Middleton released a new photo of their daughter Charlotte on her 11th birthday Saturday.

"Wishing Charlotte a very happy 11th birthday," the royal couple captioned the outdoor photo of the smiling young princess.

Charlotte is the granddaughter of King Charles III and his late ex-wife Diana. She has two brothers -- George, 12, and Louis, 8.

Charles and his current wife, Camilla, spent the week in the United States, meeting with U.S. President Donald Trump, visiting Arlington Cemetery and the Sept. 11 memorial, and speaking to Congress.

Wishing Charlotte a very happy 11th birthday! pic.twitter.com/m17GbmDoAh— The Prince and Princess of Wales (@KensingtonRoyal) May 2, 2026