Actress and singer Olivia Holt may not know herself as well as she thought she did! Watch more Beat Your Superfan! https://www.youtube.com/watch?v=42kYqU1ai7I&list=PLrx4fxhgMUOY-e4Gh1jYfkIpwvDB3yTvd

In Cosmo’s series, ‘Beat Your Superfan’ she went up against Cosmo's own Sam Feher, her #1 supporter, to see who knew all the deets about Olivia’s life and career best!

Be sure to stream Olivia’s new EP “Love U Again” out now *and* keep your eyes out for her new TV series ‘Cruel Summer’ on Freeform.