Sarah Ferguson felt excluded by the royal family.
Years before her banishment from The Firm over her friendship with Jeffrey Epstein, the former Duchess of York felt distant from her ex-in-laws.
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Ferguson was not invited to William and Kate's wedding
In 2011, Ferguson — who divorced Andrew Mountbatten-Windsor in 1996 — told Oprah Winfrey she felt "totally worthless" after not being invited to Prince William and Kate Middleton's wedding.
"It was so difficult. I wanted to be there with my girls and to be getting them dressed and to go as a family," she said.
"And also, it was so hard because the last bride up that aisle was me," the 66-year-old added of her and the former Duke of York's 1986 nuptials.
Mountbatten-Windsor comforted Ferguson by reminding her how "perfect" their big day was.
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Why wasn't Ferguson included?
In 2010, Ferguson was allegedly caught offering an undercover reporter access to her ex-husband for $665,712.50, igniting a public scandal.
"I felt that I ostracized myself by my behavior, by the past, by living with all the regrets of my mistakes," the mother of two told Winfrey.
"I sort of wore a hair shirt and beat myself up most of the day, thinking and regretting, 'Why did I make such a mistake? Why have I made so many mistakes?'" she continued.
How Ferguson found solace
Despite feeling abandoned by the royals, Ferguson admitted that the absence of her former sister-in-law Princess Diana brought her comfort.
"I really love the feeling that sort of Diana and I both weren't there," she said of William's mother, who died in a car crash in 1997.
"But I'm here to say how proud she would have been and Kate looked utterly beautiful," Ferguson noted.
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William wanted Ferguson and Mountbatten-Windsor out
Before King Charles III officially stripped Mountbatten-Windsor and Ferguson of their titles and evicted them from their residence at Royal Lodge, the Prince of Wales was vocal about cutting ties with his uncle and former aunt over their connection to Epstein.
"The king does have empathy as Andrew is his brother, but William sees the couple as a threat to the monarchy,"Â royal expert Richard Fitzwilliams told Fox News Digital.
Journalist Hilary Fordwich also explained to the publication, "Prince William is focused on protecting the monarchy's future and its public image."
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What will happen to Beatrice and Eugenie?
Ferguson and Mountbatten-Windsor will not be included in the family's Christmas Day celebrations at Sandringham this year.
Luckily, the ex-couple's daughters, Princess Beatrice and Princess Eugenie, will still be welcomed by His Majesty and will retain their titles.
"I think that Charles feels quite responsible for these two girls, because it's been a hideous time for them. Really hideous," royal expert Ingrid Seward told The Sun.
"They've both got young children, and I know they've got supportive husbands, but they've both got young children, and I think it's been very, very difficult," she added.