Prince George, 9, and Princess Charlotte, 7, will attend their great-grandmother Queen Elizabeth's funeral.
According to the order of service for the Queen's state funeral at Westminster Abbey today, the young prince and princess will walk with their parents in the procession behind the coffin.
They will walk between William and Kate and their uncle and aunt, Harry and Meghan.
It's likely four-year-old Prince Louis was thought too young to join the rest of the royals for the funeral, taking place at 11am on Monday (10pm NZT).
George and Charlotte are not included in the order of service for the committal at St George's Chapel, set to take place later in the day.
It comes after earlier speculation the Prince and Princess of Wales were "considering" taking just Prince George to Queen Elizabeth's funeral.
William and Kate were reportedly asked by advisors to take their eldest son - who is now second in line to the throne behind his father - to the service at Westminster Abbey on Monday evening (NZT).
Earlier, a source told the Mail on Sunday newspaper: "Courtiers are keen for Prince George to be at the funeral in some capacity, if only to reassure the nation of the order of succession."
Another source added: "It's currently under discussion. No decision has been made yet."
None of the couple's three children have been seen in public since the Queen died on September 8, but on Friday, Savannah Phillips, 11, Isla Phillips, 10, Mia Tindall, eight, and four-year-old Lena Tindall joined their parents, Peter Phillips, and Zara and Mike Tindall, at Westminster Hall to witness their grandmother Princess Anne stand vigil over her mother's coffin alongside her three brothers, King Charles and Princes Andrew and Edward.
Last week, William - who also has Princess Charlotte, seven, and four-year-old Prince Louis with his wife - admitted walking in a ceremonial procession that took the Queen's coffin from Buckingham Palace to her lying in state had been "challenging" and "brought back a few memories" of the time when he and brother Prince Harry had walked behind the coffin of their mother, Princess Diana, 25 years ago.
The Prince of Wales was just 15 at the time, while his younger brother was 12, and William previously said it was "one of the hardest things" he had "ever done".
Harry previously said: "I don't think any child should be asked to do that, under any circumstances."
- Additional reporting, Bang! Showbiz
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