Prince George and Princess Charlotte in the Queen’s funeral procession

Prince George and Princess Charlotte played a special role at the state funeral of their late great-grandmother Queen Elizabeth II on Monday.

The two eldest children of the Prince and Princess of Wales were part of a procession with the Royal Family, following the coffin as it entered Westminster Abbey in London.

Their attendance was confirmed by Buckingham Palace on Sunday evening with the release of the service order for the event. The program listed Cambridge’s two children, second and third in line to the British throne, among the royal motorcade behind the Queen’s coffin.

George, 9, and Charlotte, 7, along with their parents Prince William and Catherine, Princess of Wales, join world leaders, politicians, public figures and members of the European royal family, as well as more 500 dignitaries from around the world, in mourning Britain’s longest-serving monarch, who died on September 8 at the age of 96.

The siblings followed the coffin behind their parents and in front of their uncle and aunt, the Duke and Duchess of Sussex.

Prince Louis, their 4-year-old younger brother, did not attend the funeral.

The service, which is expected to have more than 2,000 guests, will include Bible readings and traditional hymns, as well as a sermon by the Archbishop of Canterbury, Justin Welby.