The Princess Royal (Image: PA)

Princess Anne, often referred to as the hardest-working royal, is known for her candidness which is a trait that Sarah Ferguson has not been exempt from.

Whether it's her frank views on her brother King Charles's plan to "slim down" the monarchy, or her remarkably relaxed reaction to an abduction attempt, the Princess Royal has won over Royal enthusiasts with her grounded approach.

It's reported that Fergie felt the brunt of her former sister-in-law's wrath after becoming embroiled in a disastrous public scandal that shook the monarchy.

In a revealing biography of Sarah and Andrew Mountbatten Windsor, published earlier this year, author Andrew Lownie alleged that Anne was so incensed with Fergie that she wanted to "throttle" her at the dinner table.

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