Princess Diana died from serious injuries in the early hours of August 31 1997 after a terrible car crash in Paris.
Her tragic death led to a huge outpouring of grief among the British public who laid masses of floral tributes in her memory.
As Britain marks the 19th anniversary of her death on Wednesday, here is a selection of photographs from her life.
Princess Diana as a child in 1963
Princess Diana as a child
This photograph shows the young Lady Diana Spencer in her pram at Park House on the Sandringham estate in Norfolk in 1963.
Diana grew up on estate but she moved to Althorp in Northamptonshire when her father inherited the title of Earl Spencer in 1975.
Princess Diana as a young woman in 1980
Princess Diana as a young woman
Diana, just 19, looks pensive and shy in this photograph taken at the kindergarden where she worked in Pimlico, London, in 1980.
The future princess met Prince Charles at a garden party in 1977 through her older sister Sarah, who he was dating at the time.
Princess Diana as a bride in 1981
Princess Diana as a bride
Prince Charles and Princess Diana kiss on the balcony of Buckingham Palace on their wedding day on July 29 1981.
Crowds of people lined the streets in London and an estimated 750 million viewers watched the fairytale wedding on television.
Princess Diana as a new mother in 1982
Princess Diana as a new mother
The royal couple introduced their newborn son Prince William to the world from the steps of St Mary's Hospital in London in June 1982.
Princess Diana gave birth to William’s younger brother Harry just over two years later in September 1984.
Princess Diana as a fashion icon in 1989
Princess Diana as a fashion icon
Diana is seen wearing the so-called Elvis dress, by fashion designer Catherine Walker, during a visit to Hong Kong in 1989.
A recent poll has named Princes Diana as the the biggest style inspiration of all time.
Princess Diana as a humanitarian figure in 1991
Princess Diana as a humanitarian figure
Diana shakes the hand of a patient suffering from AIDS at the Hospital Universidade in Rio de Janeiro, Brazil, in 1991.
She was famous for her humanitarian work and showing great compassion for those who were ill and in need.
Princess Diana as a mother in 1993
Princess Diana as a mother
Diana and her two son are seen laughing after going down the log flume at Thorpe Park theme park in 1993.
Last week Prince William comforted a grieving boy and said: “I still miss my mother every day– and it’s 20 years after she died.”
Princess Diana as a wife in 1992
Princess Diana as a wife
This iconic image shows Diana sitting by herself at the Taj Mahal, while Prince Charles attended a business meeting Bangalore in February 1992.
The poignant photograph at the “monument of love” signalled that Diana and Charles were drifting apart.
The royal couple announced their separation nine months later. Their marriage ended in divorce in 1996.
Princess Diana as a divorcee in 1996
Princess Diana as a divorcee
Diana cradles a sick child as she sits beside Jemima Khan at Imran Khan's cancer hospital in Pakistan in 1996.
After her separation from Prince Charles, she dated Mr Khan between 1995 and 1997.
Tributes to Princess Diana in 1997
Princess Diana as the people's princess
Mountains of flowers were left outside Princess Diana’s home, Kensington Palace, after her tragic death.
Princess Diana and Dodi Fayed were killed in a car crash in Paris in August 1997.
Former Prime Minister Tony Blair said: "She was the people's princess and that is how she will stay, how she will remain in our hearts and our memories for ever."