Justine was born in Los Angeles and raised in Paris, France. She attended high school in Paris, however she came back to Los Angeles her senior year and attended The Lycee Francais of Los Angeles, where she graduated. Justine went on to further her education, attending the prestigious University of Southern California, earning her Bachelor's Degree in Communications and Theatre.
演艺经历
2004年，在电影《第一女儿》中扮演路过的学生
2011年，参演的《赤焰战场》于4月18日在中国大陆上映，片中扮演护士。
2013年，参演的《惊天魔盗团》于10月10日在中国大陆上映，片中扮演一名巴黎的银行经理。
2014-2015年，在电影《分歧者》及《分歧者2》中均扮演劳伦。
2016年，在《惊天魔盗团2》中扮演佐伊·泰勒。