Meanwhile a senior royal source also claims that the royal duo are “a great double act”.
“They are a great double act. People make much of William giving the big speeches, but Kate is there too, asking questions of presidents and their wives. These things are easier when they are side-by-side.”
Just today the Duke and Duchess, along with their three children, Prince George, 6, Princess Charlotte, 4, and one-year-old Prince Louis, were snapped attending the Queen's annual Christmas lunch at Buckingham Palace.
Also joining the Cambridge's were other members of the royal family including Prince Charles, Prince Andrew and Princess Beatrice.
Meghan Markle, Prince Harry and their 7-month-old son Archie were noticeably absent from the event and are reportedly travelling abroad.