Princess Diana attended AIDS/HIV conference on July 14, 1992. (AP Photo/Gill Allen)

Princess Diana, the Princess of Wales arrives at the Royal Albert Hall in London on Tuesday, June 23, 1992 for a tribute concert for Sammy Davis Jr. Stars performing include Liza Minelli with proceeds going to the Royal Marsden Hospital for cancer. (AP Photo/Nigel Marple)

DIANA, PRINCESS OF WALES VISITS THE PYRAMIDS IN GIZA. EGYPT. 12 MAY 1992. PICTURE ANWAR HUSSEIN/LFI

(FILES) Picture dated 12 May 1992 shows Princess of Wales listening to Egyptian President Hosni Mubarak during her visit in Egypt. Egypt's 82-year-old president stepped down on February 11, 2011 and handed power to the Supreme Council of the Armed Forces, Vice President Omar Suleiman said in a brief televised statement. AFP PHOTO/MONA SHARAF

DIANA, PRINCESS OF WALES OFFERS COMFORT TO A PATIENT AT MOTHER TERESA'S HOSPICE IN CALCUTTA DURING HER VISIT TO INDIA. FEBRUARY 1992. PICTURE ANWAR HUSSEIN/LFI

On Wednesday, Sept. 25, 1991, a barefoot Diana, Princess of Wales, enters the historical Badshahi Mosque which was built in Lahore, Pakistan, by the Moghull emperors. It is a custom of the Muslim religion that shoes are not worn in places of worship. (AP Photo/Zahid)

A barefoot Princess Diana enters the historical Badshahi Mosque in Lahore, Pakistan, on Wednesday, Sept. 25, 1991, which was built by Moghul emperors. It is a custom of the Muslim religion that shoes are not worn in places of worship. (AP Photo/Zahid)

Britain's Princess Diana arrives at the Colosseum Theatre in London on June 24, 1991. (AP Photo)

Prince Charles with wife Princess Diana in 1991. (AP Photo)

Prince Charles with wife Princess Diana in 1991. (AP Photo)

Princess Diana, Princess of Wales wearing large dog patterned red, white and black jacket and skirt smiles as she struggles to keep her from blowing off after ending the christening Princess Eugenie Victoria, the youngest daughter of the Duke and Duchess of at Sandringham Church Day in Sandringham, England on Dec. 23, 1990. Nine month-old Prince Eugenie is a niece of princess of Wales. (AP Photo)

Britain's Princess Diana shares a joke with Honda employees during a tour of the automobile plant on Wednesday, Nov. 14, 1990 in Tokyo. She was among the dignitaries attending Emperor Akihito's coronation. (AP Photo)

Her Royal Highness, Princess Diana of Wales shakes hands with Andrew Ashcroft after accepting a bouquet of flowers from him during a reception in Washington on Oct. 4, 1990 for Grandma's House, a home for children with AIDS. (AP Photo/Doug Mills)

Prince Harry celebrating his 6th birthday with his mother, Princess Diana, the Duchess of York, left, and the Duke and Duchess of Kent., points to a flyover of Buckingham Palace in London on Saturday, Sept. 15, 1990 by 168 military aircraft in honor of the 50th anniversary of the Battle of Britain. The fly past was the biggest ever since the coronation. (AP Photo/Gill Allen)

Britain's Prince Charles leaves Cirencester hospital with Princess Diana in Cirencester on Sunday, July 1, 1990, with his arm in a sling after falling off his horse and breaking an arm during a polo match. The Prince an avid polo player broke his right arm in two places and was released in time for the Princess's 29th birthday. (AP Photo/Gill Allen)

Princess Diana wearing colorful garlands presented by resident Nepalese girls smiles at well-wishers at the British Naval base in Hong Kong, China on Wednesday, Nov. 8, 1989. Diana and Prince Charles arrived in the British colony on Tuesday for a three-day visit. (AP Photo/Liu Heung Shing)

Prince William gets a handshake from Frederika Blair-Turner, the headmistress of Wetherby School in Notting Hill as his little brother Prince Harry, 4, smiles, clutching his schoolbag, Sept. 11, 1989. Their mother, Princess Diana of Wales, looks on. It was Harry's first day of school but he should have started the previous Thursday. A viral infection kept him at home. (AP Photo/Gill Allen)

Princess Diana, Princess of Wales applauds Boris Becker, at the end of the Men's Singles semi-final on the Centre Court at Wimbledon, England on Saturday, July 8, 1989. The Princess, apparently an Ivan Lendl fan, applauded enthusiastically when he scored, and less so when Becker scored. (AP Photo)

Britain's Princess Diana (white dress, left) storms away from the field at the start of the mothers race, held during a sports day for Wetherby school, where her son Prince William is a pupil. The race was held at the Richmond Rugby Club, in Surrey, just south of London on Tuesday, June 28, 1989. Diana, who led all they way, was just beaten on the finish line into second place. (AP Photo)

Diana Britain's Princess of Wales, looks amused at something her son Prince William said, or, maybe should not have said, as they drove in an open carriage to the Queen's official birthday parade in London on Saturday, June 17, 1989. (AP Photo)