So you think you know everything about Justin Bieber? Then make this 70 question test about your favorite star! What is his mother's name?What was his first single?Who is his current girlfriend? 70 questions to test your knowledge of Justin and his music, and maybe learn some new stuff :p Play alone or against one of your friends on a single screen to see who's the truest Bieber fan!! If you answer all the questions correctly and prove that you are one of the best fans ever, you can leave a message for Justin on the great Wall of Beliebers! Connect to your Facebook account and share your score with your friends! If you like trivia about Justin Bieber, you've found the right app ! Believe !