Royal love stories have always captured the public imagination. The marriage of Prince Charles and Princess Diana seemed like a fairy tale at first, though it later proved far from idyllic. Still, the couple gave birth to two sons, Princes William and Harry, before their 15-year marriage ended.

Diana was born into the noble Spencer family, long connected to the Crown. In 1981, she became engaged to Queen Elizabeth’s eldest son, and their lavish wedding made her the Princess of Wales. The couple became a global sensation, adored by millions.

One surprising detail about their relationship has since come to light. According to reliable sources, Diana stood 5 feet 10 inches tall—unusually tall for a British woman. That made her virtually the same height as Charles himself.

Yet in most formal portraits, Charles appears significantly taller. In March 2017, sociologist Philip N. Cohen highlighted this discrepancy on Twitter, sharing images where the prince seems nearly a foot taller than his wife. The posts went viral.

Candid photos and video footage tell a different story. In unposed moments, the couple appears almost equal in height. It seems their formal photos were carefully staged to maintain the illusion that Charles was taller.

Some speculate Charles stood on a box or a higher step. Diana often wore flat shoes, leaned, or subtly slouched to minimize her height. These choices reportedly aimed to uphold the tradition that a husband should tower over his wife.

Though Diana openly challenged many royal protocols, she never publicly addressed this detail. Now that it has been noticed, it is impossible to unsee—a small but lasting curiosity in the story of a couple the world could not stop watching.