“Today as sisters we stand here to support not only each other but all women,” Beatrice, 29, also told the crowd.

In April 2012, Eugenie detailed her health battle to support the Royal National Orthopaedic Hospital.

“I can still vividly remember how nervous I felt in the days and weeks before the operation,” she recalled. “During my operation, which took eight hours, my surgeons inserted eight-inch titanium rods into each side of my spine and one-and-a-half inch screws at the top of my neck. After three days in intensive care, I spent a week on a ward and six days in a wheelchair, but I was walking again after that.”

Without the operation, Eugenie said, “My back would be hunched over.”

Adding: “My back problems were a huge part of my life, as they would be for any 12-year-old. Children can look at me now and know that the operation works. I’m living proof.”

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Nearly two decades after her procedure, Eugenie continues to advocate for the London clinic that treated her and speaks out about anxieties faced by children when they have to be hospitalized.

And soon, she will tie the knot with her wedding to be held October 12 at St. George’s Chapel, Windsor Castle, five months after Prince Harry and Meghan Markle marry at the very same venue on May 19.

A friend of the princess previously told People that there is “zero competition” among Eugenie and Jack and Harry and Meghan. “It is complete love, and there is room for all of them,” the friend explained.

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