Pin ups played a huge role in WWII, both back home and to keep up morale for soldier overseas. These women made history in more ways than one, and it wasn’t just about their sex appeal. Sure, that was a huge part of it, but things shifted in society after the war, and with the help of pin ups, women started playing a bigger role in society than they did before. This is an in-depth look at the history of pin up girls.