Before either of them wore a title, Sarah Ferguson and Princess Diana were simply two young women from the same restless social circle, laughing at the absurdity of aristocratic life. Their friendship deepened when they married into the same family within years of each other, and for a while they were inseparable - two duchesses navigating the strangest job in Britain side by side. Yet by the time Diana died in 1997, the two had not spoken for nearly a year. The reason, according to one royal biographer, came down to a single sentence in a memoir.
A Friendship Like Sisters
Ferguson described the relationship as sibling-like, complete with the usual turbulence. The two women shared the same sense of humor about royal life, the same frustration with palace formality, and for years the same conviction that they could survive the institution together. When Ferguson joined the family after marrying Prince Andrew in 1986, Diana reportedly hoped having an ally inside the walls would lighten her own burden.
But Diana, by all accounts, carried grudges quietly and completely. Ferguson later admitted this herself, writing in her autobiography Finding Sarah: A Duchess's Journey to Find Herself that she never fully understood why the friendship had cooled. "Once Diana got something in her head, it stuck there for a while," she observed - a gentle way of describing a pattern that would eventually end their contact entirely.
The Silence Nobody Explained
In the years before Diana's death, the warm phone calls stopped. Ferguson said she tried repeatedly to repair the distance, sending letters and messages in the hope that whatever had gone wrong could be sorted out. She remained convinced the breach was temporary. "I knew she'd come back," Ferguson wrote, explaining that she believed the disagreement, whatever it was, could not outlast a decade of shared history.
She was almost right. According to Ferguson, the day before the Paris crash, Diana telephoned a mutual friend and asked where "that Red" was - her old nickname for Ferguson - saying she wanted to talk to her again. The conversation never happened. Ferguson has described that unanswered call as one of the great regrets of her life.
The Line That Did the Damage
So what had gone wrong? Ferguson herself claimed never to know. But royal commentator Tina Brown, in The Diana Chronicles, offered the explanation that has stuck: a joke in Ferguson's 1996 memoir, My Story: Sarah, the Duchess of York.
Recounting her younger days in Clapham, Ferguson wrote that Diana had generously lent her shoes because the two women wore the same size - and then added, as a throwaway punchline, that she had also caught a verruca, a plantar wart, from the borrowed pairs. It was meant as affectionate comic material, the kind of self-deprecating anecdote Ferguson traded in. Instead, Brown called it a "fatal line."
To Diana, the remark was mortifying. A public disclosure about her feet - intimate, slightly embarrassing, and permanently in print - struck at exactly the kind of personal detail she guarded most fiercely. Biographers note that Diana was hypersensitive to betrayal from people inside her circle, and a friend turning her private quirks into book material landed as precisely that. Ferguson reportedly apologized, but for Diana the sentence could not be unsaid.
Regret That Lasted a Lifetime
Ferguson has spoken about Diana warmly in the decades since, and the friendship's abrupt end clearly haunted her. In a 2021 interview with HELLO! Magazine, she said she still thinks about Diana often, recalling their bond in the 1980s, the laughter they shared, and even the questionable fashions of the era. She has described Diana as one of the few people who genuinely understood the pressures of being watched, judged, and mythologized simultaneously.
The story is also a window into how fragile trust is at the top of public life. Two women who had weathered scandals, separations, and tabloid wars together were undone not by a dramatic betrayal but by a single careless joke about shoes. Ferguson's own reflection - that heated discussions between them never lasted the night until one somehow did - captures the tragedy neatly. The bond, she insisted, was never truly broken; only the chance to prove it was.
What the Rift Teaches About Diana's Final Year
Historians point out that 1996 and 1997 were years of enormous upheaval for Diana: the divorce was finalized, old allies scattered, and she grew more selective about whom she let close. The estrangement from Ferguson fit that pattern - painful, quiet, and, in the end, irreversible only because of timing no one could control. A footnote in a memoir cost a friendship; a phone call made one day too late cost the reconciliation. For Ferguson, the lesson has been a lifelong one: with people you love, never publish what you would not say to their face.
