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.

Happy Birthday to Kate Middleton. The Princess of Wales officially turned 43 on Thursday, January 9 and the love is pouring in from all directions—including some sweet shoutouts from her royal in-laws.

Kate Middleton, who is celebrating her 43rd birthday on Jan. 9, has proven herself to be the shiniest jewel of the British monarchy. The princess is married to Prince William, heir to the throne.

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

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

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.

As for how Kate will commemorate the special day, a source close to the princess tells Vanity Fair that she will be spending her birthday with Prince William at Windsor. When the

The Prince of Wales said she is "the most incredible wife and mother" and included a message from their children.

Catherine, Princess of Wales, turned 43 on Thursday and her husband, Prince William, shared a special birthday message.