Sierra McCormick (born October 28, 1997) is an American actress. She first became known for participating on the game show Are You Smarter Than a 5th Grader? (2007–2008) before making her acting debut with a recurring role as Lilith on the television series Supernatural (2008). She also starred as Scout Thomas on the comedy television series Romantically Challenged (2010), played Alice in the direct-to-DVD film Spooky Buddies (2011), for which she won a Young Artist Award, and received recognition for her role as Susan Kushner in the comedy film Ramona and Beezus (2010).