According to Buckingham Palace, no public events related to the anniversary of the princess' death with the participation of royal family members are planned, the royal family will spend that day privately.
Dodi Fayed, son of Harrods owner Mohamed Al-Fayed, and driver Henri Paul also lost their lives in the crash.
Two decades on, Britain has still not forgotten.
Thursday marks 20 years since Diana, Princess of Wales (1961-1997), died in a vehicle crash.
Moreover, still today, people are succumbing to know about Wearing Eagles jacket, dancing with John Travolta & other memories at Kensington Palace Memorial Garden with Prince William and Prince Harry: 20th death anniversary. "It was this odd spiritual connection this very English girl had with such a different culture and I think America and Pakistan were the two places where she felt most at home".
The firefighter who heard Princess Diana's final words has described the desperate attempts to save her life.
A decline in the number of royal scandals in the 20 years since Princess Diana's death is being linked to a rise in support among Australians for the monarchy.
The British Royal Family, world leaders, European royalty and mourners from across the globe travelled to London to attend to funeral at Westminster Abbey.
"She asked me to look in the window of a boutique at a dress she had seen to see if I liked the colour", he said.More news: Arsenal identify three potential replacements for Sanchez
The artist told Mashable he chose to commemorate the princess "who was shockingly taken far too soon in 1997" because she meant a lot to him.
The princes and the Duchess of Cambridge huddled under umbrellas as they met guests in the garden, planted with an array of white flowers.
Speaking to one group, Harry said his mother's death had affected everyone.
"We've been doing this for 20 years", 41-year-old Nicky Surridge told Reuters.
Many brought flowers, which the princes gathered and laid in front of the black and gold gates of Kensington Palace. I was just this young guy in Chicago feeling nervous and watching her.
Princess Charlotte's proud mom Kate has revealed that her little girl has started to take dance lessons! "But her greatest legacy will be her two sons". (AAP) Princess Diana died in a vehicle accident in Paris about 4am local time on August 31, 1997. The heartfelt documentary, which premiered earlier this summer, features, for the first time, the boys reflecting back on Diana as a mom, the role she cherished most. But other public services will take place across the United Kingdom, including at East London's Mildmay Mission Hospital which the princess regularly visited when it was a hospice caring for HIV patients.
"She still did a small walkabout and spoke to many of her biggest fans, who had supported her for years - it was a odd day, her grey suit matching the feeling of the crowd".
The princes have also been increasingly willing to speak about the trauma of her death and its lasting impact.
The gathering follows weeks of renewed interest in Diana, the first wife of heir-to-the-throne Prince Charles. But their relationship soured and the couple divorced in 1996.
But among the public, her star remained undimmed, with her reputation sealed as a fashion icon, charity campaigner, humanitarian and a self-styled "queen of hearts".