King Charles and Queen Camilla are wishing Kate Middleton a happy birthday! See the royal couple's tribute as the Princess of Wales turns 43.

The Prince of Wales has wished his wife, Catherine, a happy birthday as she turns 43. "To the most incredible wife and mother. The strength you've shown over the last year has been remarkable," William wrote in a message posted on social media.

Prince William praised the strength of the Princess of Wales after a turbulent year, offering a 43rd birthday wish on social media that described her as an incredible wife and mother

On Jan. 9, Kate Middleton celebrated her 43rd birthday. Her husband, Prince William, publicly acknowledged the special day on Instagram. Alongside a new black and white photo of the princess wearing a white blouse, a black overcoat, jeans, and a checkered scarf, William wrote, “To the most incredible wife and mother.”

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

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

Prince William has issued an emotional birthday message to the Princess of Wales and shared a new photo of his wife.Princess Kate is celebrating her 43rd birthday today and her first since completing preventative chemotherapy treatment.