It is believed Kate spent her special day at her Adelaide Cottage home on the Windsor Castle estate, which she shares with Prince William and their three children Prince George, 11, Princess Charlotte, nine and Prince Louis, six.

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

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.

Kate Middleton, Princess of Wales, turns 43 today, and will mark her birthday in Windsor with Prince William, and their children; George, 11, Charlotte, nine, and six-year-old Louis

Prince William is honoring his wife, Princess Catherine, on her 43rd birthday, calling her "the most 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.

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,