Prince Louis is said to be struggling to understand the death of Queen Elizabeth II.
The four-year-old is reportedly asking his parents Prince William and Kate, Princess of Wales whether they can still play games at Balmoral when they visit.
Kate is said to have revealed Louis’ struggles during a conversation with Australia’s Governor-General David Hurley at a reception held for Commonwealth dignitaries on Sunday.
Mr Hurley, speaking about the conversation, said the Prince and Princess of Wales’s eldest son George was “sort of realising how important his great-grandmother was and what is going on".
Kate, Princess of Wales and Prince Louis
Chris Jackson
Prince George and Princess Charlotte were in attendance at the state funeral on Monday
SARAH MEYSSONNIER
But Mr Hurley added: "The younger one is now asking questions like, ‘do you think we can still play these games when we go to Balmoral’ and things like that, because she's not going to be there.”
It comes as Louis, four, was not in attendance at Queen Elizabeth II’s state funeral on Monday but George, nine, and Charlotte, seven, did attend the service alongside their parents.
George and Charlotte travelled to Westminster Abbey in the same car as Queen Consort Camilla, with Kate, Princess of Wales arriving with them.
The future king and his sister bid farewell to their beloved “Gan Gan” as the youngest members of the Royal Family followed Queen Elizabeth II's coffin through Westminster Abbey.
George and Charlotte walked behind Queen Elizabeth II’s coffin as part of a solemn procession past hundreds of guests through the church.
As the young royals followed their great grandmother’s coffin, flanked by their parents, the Prince and Princess of Wales, Charlotte held her hands clasped in front of her while George had his arms by his side.
The foursome walked a little behind King Charles III and Camilla Queen Consort, and ahead of Meghan Markle and Prince Harry.