Prince William and Prince Harry are "ensuring the legacy" of their mother Diana is "protected".

When the Princess of Wales tragically died in August 1997, there was worries that the royal family and the institution "wouldn't survive her death" but broadcaster Piers Morgan believes they got through it thanks to Queen Elizabeth and her grandsons William and Harry.

Piers shared: "Many worried the royals wouldn't survive her death. But they have, and aside from the wondrously consistent and calming majesty of The Queen, that is mainly down to her sons ...

"William and Harry are now ensuring her legacy is protected, remembered and nurtured, and the Monarchy isn't allowed to slide away into overly formal irrelevance.

"The soul-searching way they have recently taken to pouring their hearts out about everything from mental health to the death of their mother may not be everyone's cup of tea. In fact, I'll readily admit it's not mine.

"But it perfectly resonates with most of the social media driven youth of today, who find the Princes both relatable and, crucially, relevant."

And Piers went on to call the late Diana a "fascinating, complex and passionate" woman, who he admits made him feel "unusually nervous".

Writing for the Daily Mail, he added: "Diana was one of the most fascinating, complex, passionate, sexy, scheming and unpredictable women I have ever met. She was also utterly fabulous ...

"I found myself feeling unusually nervous as I arrived, and even more so when she asked: 'Would you mind awfully if William joins us?' What followed remains one of the most surreal experiences of my life.

"Diana was staggeringly open with me, about Charles, the Queen, and the many varied men in her life. It was clear that she found her ridiculous global fame both exciting and terrifying. 'I sometimes dream of emigrating,' she sighed at one stage, 'but to where? Somebody would find me wherever I went.' That was true."