Vaugier was born in Vancouver, British Columbia, the daughter of French immigrants. She grew up in a Roman Catholic, French-speaking household, and is fluent in French. She divides her time between Los Angeles and Vancouver. She attended Crofton House School, a girls private school, for 10 years until she transferred to Magee Secondary School, which offers a flexible academic program for professional and pre-professional student athletes, artists and musicians (SPARTS), for the last two years of high school. She has an older brother, Jason Vaugier.