In a television documentary, Princes William and Harry relive childhood memories 20 years after the sudden death of their mother, Princess Diana.
Kensington Palace said in a statement that the 90-minute movie (Diana, Our Mother: Her Life and Legacy) celebrates the life and career of the late Princess of Hearts.
Diana, the first wife of British Crown Prince Charles, died in a car accident in the French capital, Paris, in August 1997, at the age of 36. William was 15 years old at the time and Harry was 12.
In the film, Princes William, second in line to the throne, and Harry talk about their childhoods while looking at photos in a family album compiled by Diana.
This year, William said he still felt the trauma of losing a mother, even 20 years after Diana's death. Harry revealed that he received psychological counseling to help him overcome the grief.
ITV is showing the film in the United Kingdom, on Monday, at 20.00 GMT, and it is produced by the Oxford Film and Television Production Company.
A number of events are scheduled to commemorate Diana's death. William and Harry attended mass this month at Diana's grave. The two brothers also agreed to erect a statue of the late princess in front of their official residence in London in her honor.
On Saturday, Buckingham Palace displayed rare items from Diana, including her favorite music and her ballet shoes. An exhibition opened in February celebrating Diana's fashion.