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

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.

Kate Middleton, who is celebrating her 43rd birthday on Jan. 9, has proven herself to be the shiniest jewel of the British monarchy. The princess is married to Prince William, heir to the throne.

Kate Middleton is celebrating her 43rd birthday and "looking after herself" after completing chemotherapy treatment, a family friend tells PEOPLE.

Since she became the Princess of Wales, Kate Middleton has worn playful pantsuits and a plethora of polka dots.

Kate Middleton is 43! The Princess of Wales is celebrating her birthday surrounded by those nearest and dearest to her on Thursday, The Post can reveal. While Princess Catherine has spent much of her time at Sandringham Estate in Norfolk,