In recent years, Prince William has been increasingly vocal about the terrible toll Princess Diana's tragic death took on his mental health and wellbeing.
But while the Duke of Cambridge was incredibly close with his beloved mother, their deep connection did not mean the two always saw eye to eye.
According to a 2012 YouTube documentary, 'Prince William at Thirty', a young William refused to speak to his mother when she sat down with Martin Bashir for her infamous 1995 BBC Panorama interview which laid bare the state of her marriage to Prince Charles.
WATCH this video to see what hurt William the most:
The Princess of Wales shocked the world by speaking candidly about life inside the House of Windsor, as well as her ongoing battle with mental health and the longterm infidelity of the Queen's son with Camilla Parker-Bowles, Express.co.uk reports.
The documentary declared: 'For William, who had always supported his mother, this time she had gone too far."
Royal author Katie Nicholl said the young Prince gave Diana the silent treatment because he was so hurt by her public humiliation of his father and their family.
Diana with her sons Prince Harry and Prince William in August 1995, two months before the infamous Panorama broadcast
William, raised to treat life with a stiff upper lip, reportedly loathed the idea of "playing out one's troubles and wearing one's heart on one's sleeve".
The infamous interview, broadcast to the British nation in November 1995, saw Diana confess that Charles was jealous of her popularity with the public.
Princess Diana - née Spencer - also admitted to suffering from bulimia from an early age as well as engaging in self harm when she felt overwhelmed by the pressures of royal life.
The most iconic revelation was the Princess' comment that "there were three of us in this marriage", referring to herself, the Prince of Wales and the present Duchess of Cornwall.
Alice MurphyAlice Murphy is a freelance journalist and self-professed news addict. Originally from Ireland, Alice is on a mission to visit every country in the world (telling stories along the way). She is most commonly found eating sushi, drinking strong coffee and reading horoscopes.
Access your account
Personalise the newsletters you receive and gain access to competitions and offers