A former royal butler has dubbed Princess Kate Middleton "the future" of the Royal Family.
It comes as questions over the monarchy's role in the UK intensifies ahead of King Charles coronation next month.
Anti-monarchy group Republic has revealed it will be attempting to stage the largest protest action in its history on May 6.
They want people to join them in their bid for the UK to have an elected head of state, reports GB News.
But ex-royal butler Paul Burrell believes the Princess of Wales will play a pivotal role in bringing back support for the monarch.
He said: “She has never put a foot wrong and in many ways, the future of the Royal Family rests on Kate’s shoulders, not William’s.
“Kate is the one who is holding it all together. She is going to be the People’s Princess, in the footsteps of Diana.
“I absolutely endorse that too. She is following her mother-in-law’s plan. One day, William will be King, Diana’s son will be King.
“That will make me very happy. We’ve got to cross this bridge with Charles and Camilla because I’m a monarchist, we’ve got to.
“It’s a short bridge, but on the other side, it’s King William and Queen Catherine.”
Kate is set to come face-to-face with Prince Harry at the coronation, despite a tense relationships revealed in the Duke’s recent memoir.
The book claimed there was an unsavoury relationship between Harry's wife, Meghan Markle, and Kate.
Royal author Robert Jobson, said the Princess of Wales took part in an “almost unbearable” walk out with her partner, Prince William, Harry and Meghan.
In his book Our King, Jobson said Kate told a senior royal the public show of unity “was one of the hardest things she had ever had to do” because of the depth of ill-feeling between the two pairs.