Jamie Jilynn Chung is an American actress and former reality television personality. She first gained fame in 2004 as a cast member on the MTV reality series, The Real World: San Diego and subsequently through her appearances on its spin-off show, Real World/Road Rules Challenge: The Inferno II. She is regarded by many as the Real World alumna with the most successful media career. She later transitioned into acting and has since become known for films, such as Grown Ups, Premium Rush, Sorority Row, The Hangover Part II, Princess Protection Program, and Sucker Punch and having been the series lead of the ABC Family television miniseries Samurai Girl. Chung received critical acclaim for her performance as the lead of the independent drama film about domestic human trafficking, Eden. Since 2012, Chung has appeared in the recurring role of Mulan in the ABC fantasy television series Once Upon a Time. She is part of the main cast in the NBC drama series Believe.