Britain marks the 10th anniversary of Princess Diana's death with a royal memorial service in London while a million people pour onto the streets.
With wrangling over legacy and conspiracy theories over her death still rife, Diana's sons Prince William and Prince Harry, her ex-husband Prince Charles and Queen Elizabeth II, will later today hold a solemn service in London.
VIDEO: Lessons learned?
Her sons, aged 15 and 12 when their mother died aged 36 after a high-speed car crash in a central Paris road tunnel, now are officers in the British army.
They were to give personally-selected readings during the service at their regimental chapel. Archbishop of Canterbury Rowan Williams, head of the Anglican church, has written two prayers for the occasion.
Among the 500 guests will be Prime Minister Gordon Brown, his predecessor Tony Blair, who famously described Diana as the "people's princess," and pop singer Elton John, who sang an adapted version of "Candle In The Wind" at Diana's funeral a decade ago.
But Charles's second wife Camilla, Duchess of Cornwall — who Diana dubbed "the rottweiler" and blamed for her divorce from the heir to the throne in 1996 — will not be attending.
Although royal officials initially insisted she would be there, Camilla announced Sunday that she did not want to "divert attention from the purpose of the occasion," reportedly on advice from the queen.
Al Fayed not invited
Mohamed Al Fayed, the father of Diana's lover Dodi Fayed, who also died in the August 31, 1997 accident, was not invited to the service.
Al Fayed claims that Diana and his son were killed by the British establishment and senior royals in a conspiracy designed to stop the princess marrying a Muslim.
Last year, the former head of London's Metropolitan Police, Lord John Stevens, ruled out any plot and said the crash, which also killed chauffeur Henri Paul, was a "tragic accident".
French investigators concluded that Paul, an employee of the Fayed-owned Ritz Hotel, was well over the legal alcohol limit when he drove Diana and Dodi to the latter's Paris apartment with paparazzi in hot pursuit.
Britain remembers Diana
Diana's death generated an unprecedented outpouring of public grief in Britain.
One million people poured onto the streets of London for the funeral and some say the episode changed the country.
A steady stream of Diana fans have been tying flowers and cards to the gates of Kensington Palace, her former London residence, where hundreds of thousands of bouquets were left in the days after her death.
The palace is also hosting an exhibition in her memory, as is London's National Portrait Gallery.