The Princess of Wales, Kate Middleton, celebrates her 43rd birthday today. In honor of the big day, she's breaking tradition ...

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

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

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

Catherine, Princess of Wales, turns 43 on Jan. 9 and received a sweet message from her husband, Prince William.

After a challenging year, Prince William has shared a moving tribute to his wife, Kate Middleton, on her 43rd birthday ...

Prince William made rare personal comments about his wife Kate Middleton in honor of her 43rd birthday. See the sweet tribute ...

The Prince of Wales penned heartfelt birthday wishes to his wife, the Princess of Wales, as she turned 43 on Thursday.

Kate Middleton's 43rd birthday portrait was taken by Matt Porteous in Windsor Castle last summer. She is spending the day with Prince George, Princess Charlotte and Prince Louis.

William's touching tribute was accompanied by a new photo of the Princess of Wales dressed in jeans, a blouse, blazer and ...