Kate Middleton might be the "glue" between Prince William and King Charles when tensions get high, but that doesn't mean Charles is ready to talk to his daughter-in-law about her becoming queen when the time comes.

Kate Middleton are poised to be Queen of England sometime in the future, and apparently King Charles and Queen Camilla have zero interest in giving her advice on the matter.

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.

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