Prince William wished his wife, Catherine, Princess of Wales, a happy 43rd birthday in a sweet message posted on X.

In a break with palace tradition, Prince William wrote a personal, heartfelt message in honor of Kate Middleton's 43rd birthday alongside a new photo of the princess.

Prince William pays tribute to ‘incredible wife’ Kate Middleton as princess turns 43 - Princess celebrating 43rd birthday at ...

Princess Kate is celebrating her 43rd birthday. Her husband, Prince William, honored the "most incredible wife and mother" in ...