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.

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

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.