Did Princess Diana have a state funeral?
AS Prince William and Prince Harry prepare to say their final goodbyes to their grandmother, Queen Elizabeth - the royal funeral is bound to bring up some painful memories for Princess Diana's sons.
In 1997, Princess Diana was tragically killed when the car she was travelling in crashed in Paris.
When was Princess Diana's funeral?
Princess Diana was laid to rest on September 6, 1997, exactly a week after her horror car crash in Paris.
As many as 2,000 people attended the ceremony in Westminster Abbey, where her coffin was brought on a gun carriage from Kensington Palace.
As the coffin made the 1hr 47min journey from Kensington Palace to Westminster Abbey, distraught young Princes, William and Harry, walked behind their late mother alongside King Charles, Prince Philip and her brother Earl Charles Spencer.
The streets were lined with more than a million people, many of whom lay flowers along the procession route which passed Buckingham Palace, where the Queen was seen bowing her head.
The coffin arrived for the beginning of the funeral ceremony in Westminster Abbey at 11am, with mourners including the entire Royal Family, all living former Prime Ministers, and dozens of celebrity friends.
George Carey, the then Archbishop of Canterbury, led the service, and Charles Spencer read the eulogy in which he criticised the Royal family for their treatment of his sister.
As many as 30million viewers witnessed the ceremony on television.
A private burial took place later that day at Althorp Park on the Spencer family's estate.
Did Princess Diana have a state funeral?
Princess Diana's funeral was not a state funeral in part because the then Princess of Wales was no longer a member of the Royal Family - she and the then-Prince of Wales had divorced one year before.
Instead, Princess Diana had a ceremonial funeral - which shared many of the elements of a state funeral.
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Although it was not an official state funeral, a full deployment of royal pageantry characterised the sombre ceremony.
A state funeral is typically held for a king or queen and follows strict rules of protocol.
In rare cases, a state funeral can also be held for "other exceptionally distinguished persons";.
Everything you need to know about Princess Diana's final years
After years of separation, Prince Charles and Princess Diana divorced in 1996.
In 1997, Princess Diana spent her summer in the south of France and Italy. During August, she visited Sarajevo, Bosnia, to highlight the fight against landmines.
By the end of the month, the Princess of Wales and Dodi Al-Fayed travelled to Paris together.
It was revealed that Princess Diana stayed longer than planned in Paris due to a row over her land mine campaign.
Travelling in a black Mercedes Benz, Princess Diana was involved in a car crash in the Pont de l'Alma tunnel on August 31, 1997.
The Princess of Wales died at the age of 36.
Her funeral was held on September 6, 1997. As her coffin made the journey from Kensington Palace to Westminister Abbey, Prince William and Prince Harry walked behind their late mother.
Princess Diana's mother, Frances Shand Kydd, and sisters, Jane Fellowes and Sarah McCorquodale, also attended the funeral.
The Princess of Wales was buried at her childhood home - Althorp House
If it wasn't for her tragic death, Princess Diana would have been 62 today.
What did Prince William and Harry say about the funeral?
Princes William and Harry walked behind Diana's coffin as it was carried to Westminster Abbey — a move that has since drawn criticism as it put the young Princes in the spotlight during their time of grief.
William was aged 15 at the time with Harry aged 12.
In the years following their mothers tragic death, her sons, Prince William and Prince Harry, remained notably silent, refusing to make any sort of official statement about their grief.
For the young princes, their last interaction with their mother came in the form of a phone conversation - something that had become a nightly occurrence since their parents divorced.
Speaking in the documentary Diana, Our Mother, Harry told of how he can't remember what the last phone call with his mother entailed.
He said: "But all I do remember is probably, you know, regretting for the rest of my life how short the phone call was.
And if I’d known that was the last time I was going to speak to my mother, the things I would have said to her.”
in August 2017 Wills told BBC documentary Diana, 7 Days, that he hid behind his fringe as he walked past the million-strong crowd in London.
He said: "I felt if I looked at the floor and my hair came down over my face, no one could see me.
"It wasn't an easy decision and it was a sort of collective family decision to do that... there is that balance between duty and family and that's what we had to do."
He added that he felt the need to do his duty, even though he was a child "who just wanted to go into a room and cry, who'd lost his mother".
But Prince Harry said he was "very glad" to have been part of the funeral cortege for his mum.
He said he does not "have an opinion whether that was right or wrong", but "looking back on it" he is happy that he joined the funeral cortege.
But in June 2017 he had said that no child should be expected to perform the same ritual "under any circumstances".