Footage from Princess Diana's funeral features in the trailer for the Duke of Sussex's new mental health series.
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Martin Bashir interviews Princess Diana in Kensington Palace for the BBC television program "Panorama" in 1995.
Photos: Remembering Princess Diana, 1961-1997
Diana Spencer is shown in an undated family album photo at Park House, Sandringham, Norfolk, when she was a toddler. (AP Photo/HO)
Family album picture of Lady Diana Spencer in her baby carriage at Park House, Sandringham, Norfolk in 1962. (AP Photo/ho)
Family album picture of Lady Diana Spencer in Cadogan Place Gardens, London, during summer of 1968. (AP Photo)
Family album picture of Lady Diana Spencer with Souffle, a Shetland pony, at her mother's home in Scotland during the summer of 1974. (AP Photo/ho)
Lady Diana Spencer, near her flat in the Earls Court district of London, around November 1980. (AP Photo)
Lady Diana in an unknown location in 1981. (AP Photo)
Prince Charles and his bride-to-be, Lady Diana Spencer, driving down the course in an open carriage before Royal Ascot in England meeting on June 19, 1981. (AP Photo/Press Association)
The casually clad Prince Charles of Wales and his fiancée Lady Diana Spencer, relaxing on a fence at Balmoral on May 6, 1981, during their Scottish holiday. (AP Photo/Press Association)
Prince Charles and Lady Diana Spencer leave St Paul’s Cathedral followed by Prince Andrew after a rehearsal of their wedding ceremony in London on July 27, 1981. (AP Photo)
Lady Diana Spencer in her wedding gown on the steps of St. Paul's Cathedral in London on her way to the wedding ceremony. Person at left is unidentified. (AP Photo/BIPNA, Pool)
Prince Charles and Lady Diana Spencer are shown on their wedding day at St. Paul's Cathedral in London on July 29, 1981. (AP Photo)
With a 25-foot (7.6 meter) sweeping train, The Princess of Wales, former Lady Diana Spencer, leaves St. Paul's Cathedral arm in arm with Prince Charles at the end of their wedding ceremony in London, July 29, 1981. (AP Photo)
Prince Charles and Lady Diana Spencer are shown on their wedding day at St. Paul's Cathedral in London on July 29, 1981. (AP Photo)
Britain's Prince Charles kisses his bride, the former Diana Spencer, on the balcony of Buckingham Palace in London after their wedding on July 29, 1981 (AP Photo)
The carriage carrying the Prince and Princess of Wales passes along Trafalgar Square on its way from St. Paul's Cathedral to Buckingham Palace after the royal wedding in London on July 29, 1981. (AP Photo)
Prince Charles and his bride Diana, Princess of Wales, pose in the Throne Room of Buckingham Palace for this picture made after their wedding at St. Paul's Cathedral today. Back row, left to right: Edward van Cutsem, Lord Nicholas Windsor, Sarah Jane Gaselee, Prince Edward, Prince Charles, The Princess of Wales, Prince Andrew and Lady Sarah Armstrong-Jones. Front row, left to right: Catherine Cameron, seated, India Hicks, standing, and Clementine Hambro, seated. (AP Photo, BIPNA, Pool)
The carriage carrying the Prince and Princess of Wales passes along Trafalgar Square on its way from St. Paul's Cathedral to Buckingham Palace after the royal wedding in London on July 29, 1981. (AP Photo)
Prince Charles and his bride Diana, Princess of Wales, wave from the balcony of Buckingham Palace after their marriage July 29, 1981, at St. Paul's Cathedral. (AP Photo)
Lady Diana Spencer waves to crowds of well-wishers from a horse-drawn carriage en route to St. Paul's Cathedral, London, where she will marry Britain's Prince Charles, heir to the throne, July 29, 1981. (AP Photo/Pool)
Britain's Prince Charles, Prince of Wales, with his wife Princess Diana, holds his newborn son Prince William as they leave St. Mary's Hospital, Paddington, London, June 22, 1982. (AP Photo/Staff/Redman)
Britain's Prince William, the 6-month old son of British Prince Charles and Princess Diana, the Prince and Princess of Wales with his parents during a special picture call at Kensington Palace in London, England on Dec. 22, 1982. (AP Photo/David Caulkin)
This is a 1984 photo of Princess Diana with sons Prince William, foreground, and Prince Harry. (AP Photo)
Princess Diana stoops down to accept flowers from children seated on a log as the royal couple visited Macedon, Australia, Saturday, Nov. 2, 1985. (AP Photo/Jim Bourdier)
Princess Diana, the Princess of Wales, arrives at a charity fashion show wearing a silver dress designed by Bruce Oldfield, in London, in 1985. The charity affair was expected to raise £70,000 ($82,600) for the Dr. Barnado Homes, that take care of orphan children. (AP Photo)
Princess Diana, the Princess of Wales sits cross-legged in a Bedouin tent in the desert about 60-miles from Riyadh, Saudi Arabia on Nov. 18, 1986, and talks with Prince Saod Faisel, son of King Faisal. (AP Photo/John Redman)
The Princess of Wales is pictured during an evening reception given by the West German President Richard von Weizsacker in honour of the British Royal guests in the Godesberg Redoute in Bonn, Germany on Monday, Nov. 2, 1987. Prince Charles and Princes Diana are touring Germany presently in an official state visit. (AP Photo/Herman Knippertz)
Britain's Princess Diana, the Princess of Wales, hugs and plays with an HIV positive baby in Faban Hostel, San Paulo, on April 24, 1991, on the second day of her visit to Brazil. (AP Photo/Caulkin)
Britain's Queen Elizabeth, the Queen Mother, right, talks with Diana, Princess of Wales, at the Royal Ascot horse race meeting near London, England, in this undated photo. (AP Photo)
