Kate “wants to look to the future” after being named the Princess of Wales by King Charles III.
The King made the announcement during an address to the nation on Friday evening, when he also named William the Prince of Wales.
Speaking during the address, the King said: “As my Heir, William now assumes the Scottish titles which have meant so much to me.
“He succeeds me as Duke of Cornwall and takes on the responsibilities for the Duchy of Cornwall which I have undertaken for more than five decades.
“Today, I am proud to create him Prince of Wales, Tywysog Cymru, the country whose title I have been so greatly privileged to bear during so much of my life and duty.
“With Catherine beside him, our new Prince and Princess of Wales will, I know, continue to inspire and lead our national conversations, helping to bring the marginal to the centre ground where vital help can be given."
Following the announcement, a royal source said that the new Princess of Wales “appreciates the history associated with this role but will understandably want to look to the future as she creates her own path.”
The source added: “The couple are focussed on deepening the trust and respect of the people of Wales over time.
“The Prince and Princess of Wales will approach their roles in the modest and humble way they’ve approached their work previously.
During his address, the King also "expressed my love" for Meghan Markle and Prince Harry.
He said: “I want also to express my love for Harry and Meghan as they continue to build their lives overseas."
Kate, the Princess of Wales
Kensington Palace
King Charles III delivers his address to the nation
Yui Mok