Prince William made a heartbreaking promise to mum Princess Diana after finding her sobbing in a bathroom.
As a 10-year-old, the Duke of Cambridge, now 38, vowed to give his mum her royal title back when he became king after her marriage to Prince Charles ended.
According to OK!, after finding her sobbing, the young prince also stuffed tissues under the door as Diana sobbed, saying "I hate to see you sad."
"Don’t worry, Mummy, I will give it back to you one day when I am King," he added.
Later, Diana is understood to have confided in a friend that William was "an extraordinary moral support" and he promised to always look after her.
Diana's divorce from Prince Charles in 1996 can be counted as one of the year's, if not the decade's, biggest headlines.
Following high-profile affairs from both sides of the marriage, scandalous interviews, and separation, divorce was inevitable.
To avoid more drama, the Queen reportedly wrote to Diana and Charles individually, asking them to divorce as soon as possible
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Prince Charles remained the Prince of Wales. Meanwhile, Princess Diana had her title stripped away.
Paul Burrell, who was the butler and longtime confidant of the Princess of Wales, revealed in his autobiography, A Royal Duty, that William vowed to give Diana her title back.
According to 2001 book, A Royal Duty, the Queen was happy for Diana to keep her HRH following her divorce from Charles in 1996, but the Prince of Wales was "adamant" that she give it up.
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She was subsequently given the title: Diana, Princess of Wales.
The loss of the honorific separated Diana from the rest of the family in such a way that she had to curtsy to those who had it, including her own children.
Princess Diana tragically died a year later in a Paris car crash.
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