Princess Diana, born Diana Frances Spencer, was one of the most famous (and photographed) women in the world in the eighties and nineties. Her every move (and outfit) was meticulously documented and scrutinized; even her death turned into a paparazzi-fueled media frenzy, which many still cite as evidence of an out-of-control tabloid culture. Despite all this publicity, though, there's still so much we don't know about her. Princess Diana is simultaneously ubiquitous and mysterious, but these 50 rare photos offer a little more insight into the real Diana and her tragically short life.