13. Josephine Baker
Josephine Baker had a career in entertainment that lasted for almost fifty years. She sang, danced, and worked as a spy for French intelligence during World War II. The Nazi guards were so struck by her beauty that they called her Black Pearl. They even allowed her to slip through the borders without any trouble. So how did she carry out her espionage? She had hidden messages written in invisible ink on her sheet music. She had no problems putting her good looks to use if it meant bringing down the Nazis.