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,

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.

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

The Prince of Wales posted a birthday message for his wife, Catherine, Princess of Wales to social media on Thursday to celebrate her 43rd birthday.

Princess Kate is celebrating her 43rd birthday, her first since completing a challenging health battle with preventative chemotherapy treatment.To mark the occasion, England Rugby—one of

Catherine, Princess of Wales, revealed last March that she had been diagnosed with an unspecified cancer and was undergoing chemotherapy.

Kate Middleton is putting herself first as she rings in her birthday four months after announcing that she completed chemotherapy treatment for an undisclosed form of cancer. The Princess of Wales turned 43 on Jan.

Now, let’s be real—43 isn’t exactly one of those milestone birthdays where you throw confetti and pop champagne for days, but it’s still a birthday, and that’s always worth celebrating. The Princess of Wales is famous for keeping things pretty chill on her special day,