List first began acting with television and film appearances. She first made an uncredited appearance on the soap opera As the World Turns in 2002.In 2004, she appeared on the television show All My Children as Bess, and in the same year made a cameo appearance in the feature film Spider-Man 2, which was uncredited.She continued to appear in guest roles and cameos as well as making another uncredited appearance on the live show Saturday Night Live until 2008, when she had her first major role in the feature film 27 Dresses, starring as the young version of the character Jane Nichols. The film was a commercial success, and served as List’s acting debut.
List began to appear in more feature films, and in 2010 was cast in alongside Robert Pattinson in the film Remember Me, as a girl who bullies Pattinson's character's little sister. The film was a box-office success.In the same year, List had begun her work with Disney, and appeared in the Disney film The Sorcerer's Apprentice, which turned to be a box-office bomb. She also was cast in Lifetime Movie Network's Secrets in the Walls, alongside Jeri Ryan and Kay Panabaker.