Kate Middleton, who turns 43 on Jan. 9, 2025, shares Prince George, Princess Charlotte and Prince Louis with husband Prince William. See the royals' sweet family photos here.

Princess Kate is celebrating her 43rd birthday today, and to mark the occasion, a new photo of the royal has been released by Prince William.

Kate, the Princess of Wales, turns 43 on Thursday, capping what was a tumultuous year for the mother of three and wife of Prince William. Kate, who was born Jan. 9, 1982, is expected to spend her birthday privately with William and their kids -- Princes George and Louis and Princess Charlotte -- at home in Windsor, England.

After a challenging year, Prince William has shared a moving tribute to his wife, Kate Middleton, on her 43rd birthday describing her as “the most incredible wife and mother,” alongside a new portrait.

Happy birthday Princess Kate! And happy new-royal-portrait-day to the rest of us. In honor of Kate Middleton's 43rd birthday on January 9, Prince William shared a new, black-and-white portrait of the Princess of Wales on the couple's official Instagram, with a sweet message in the caption.

Prince William praised the strength of the Princess of Wales after a turbulent year, offering a 43rd birthday wish on social media that described her as an incredible wife and mother.

Kate Middleton is celebrating her 43rd birthday by putting herself first. Less than one year after revealing her cancer diagnosis, the Princess of Wales is finding the balance between her health and work.

Prince William said Princess Kate was "the most incredible wife and mother" and including a message from their children.

Kate Middleton is celebrating her 43rd birthday on Jan. 9 and it feels like a big one. While it isn’t a milestone year, it is a milestone day for her after her battle with cancer in 2024. Prince William decided to honor his wife on Instagram with a surprisingly mushy post — and we love