What came first -- Zendaya's rise to fame or Barack Obama's presidency? We put the Reactors to the ultimate Child Star Trivia Challenge to see if they could guess which event came first! How many did you get right? Let us know down below! Content Featured: Demi Lovato youtube.com/watch?v=eZ-hR5VT4pA Jennette McCurdy youtube.com/watch?v=7vdIT_6sL3k Jamie Lynn Spears youtube.com/watch?v=fyowSAsvmzs Ariana Grande youtube.com/watch?v=H9Q60jGaozU Zendaya youtube.com/watch?v=NcJnXOcl-G4 Dylan and Cole Sprouse youtube.com/watch?v=N5-wjiu702E Jojo Siwa youtube.com/watch?v=tkGbJMpad5o Josh Peck youtube.com/watch?v=vFY9jpxXfr0&list=PLml5JVm1HY0ylGdaDLxkg8eWtkid9DA3S Selena Gomez youtube.com/watch?v=zFUGlehV5Uw Justin Bieber youtube.com/watch?v=csymVmm1xTw Lindsay Lohan youtube.com/watch?v=KqEZUkW9TCo Scarlett Johanson youtube.com/watch?v=m4w...