Prince William has begun flexing his royal muscles. The Prince of Wales, 42, is “seizing” more power from his cancer-stricken father, King Charles, as he nears his ascension to the throne, according to a new report.

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.

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

The Princess of Wales said her cancer diagnosis came as a "huge shock." Kate Middleton and Prince William share three kids: George, Charlotte and Louis.

Prince William may have put pressure on King Charles III to let him skip a landmark event so the Royal Family can still celebrate Kate Middleton's birthday, as the Princess of Wale

The Prince of Wales wrote that he and the couple’s three kids — Prince George, Princess Charlotte and Prince Louis — “are so proud” of Middleton.

While Kate Middleton has since returned to the spotlight, Prince William was the face of their family in public and his wife's No. 1 champion at home while she underwent chemotherapy.

A royal commentator has revealed whether Kate Middleton and Prince William will watch Meghan Markle's new lifestyle Netflix documentary.

Prince William has shared a loving tribute to Kate Middleton. We'll be bringing you the very latest updates, pictures and video on this breaking news story. Please check back regularly for updates on this developing story HERE .

Wearing a three-strand pearl-and-diamond necklace that had been a favorite of Queen Elizabeth II’s, Princess Kate Middleton stood by Prince William and welcomed the Emir of the State of Qatar and his wife to London for a state visit.