From Roman Holiday to Breakfast at Tiffany's, when Audrey Hepburn starred in a movie, she lit up the screen. Her unique sense of fashion, her grace, and, most important, her spirit made her beloved by generations. But her life offscreen was even more luminous. As a little girl growing up in Nazi-occupied Europe, she learned early on that true kindness is the greatest measure of a person—and it was a lesson she embodied as she became one of the first actresses to use her celebrity to shine a light on the impoverished children of the world through her work with UNICEF.