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

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,

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 Middleton is just days away from ringing in her 43rd birthday on January 9, and after her health struggles over the past year, it’s not surprising that she would want to ma