 Stout was born in Philadelphia, Pennsylvania to a European American father and a Han Chinese mother; as a result, she was raised in a partially Chinese-speaking household.Her mother was born in Taiwan to parents from Guizhou.Stout grew up in Cupertino, California and graduated from Lynbrook High School in San Jose, California, where she was a founding member of the Lynbrook Speech and Debate Club, and worked as a model in her teens.