Princess Diana was once thought to be the most photographed woman in the world. She certainly lived under intense scrutiny, not only from the media but also from fans and family. Even after she had left this world under such tragic circumstances, there were those who became obsessed with poring over every detail of her life. Surely, then, it’s impossible anything could’ve been overlooked in images of the so-called “People’s Princess,” right? Well, no, apparently it’s not. Because people have started to notice a strange – and perhaps telling – detail that crops up repeatedly in formal photos of Diana with Prince Charles.