 YouTube has become a platform to express your opinions, display your creativity, and so much more. When it launched in 2005, I'm sure the founders didn't expect the platform to create worldwide sensations. Welcome to World's Best Videos, we've compiled a list of celebrities who originally started on YouTube. Let's get into it. Justin Bieber Around the age of 12, Justin began to upload performances of him singing. It started off slow but gained traction with time. He eventually caught the eye of his manager, Scooter Braun. He was then introduced to Usher who was in a bidding war with Justin Timberlake to sign Justin Bieber. He signed a huge Island Def fam record seal before he wasn't able to drive. Kill yourself, you'll take a bit of it, and you'll be having me to bit it, just go over to your running and shove your head in it. Oh, Burnham. Robert Pickering, Burnham is an American comedian musician, singer, songwriter, rapper, actor, and poet. He began his career as a YouTuber in March 2006 and his videos have been watched more than 188 million times as of March 2017. Burnham signed a four-year record deal with Comedy Central Records. Bo has released multiple full-length comedy albums, signed a deal to write music for a Jude Apatow movie, and developed his own TV show on MTV, Zack Stone is gonna be famous. Cody Simpson Cody Robert Simpson is an Australian singer, songwriter, musician, dancer, and actor. He started uploading videos of him covering songs by the Jackson Five and Justin Timberlake in 2010. He was subsequently discovered by record producer Sean Campbell. He has released two studio albums and has appeared in multiple TV shows. Tori Kelly Tori started a post-covers on YouTube in 2007 when she was only 14, but it wasn't until after she auditioned for American Idol that she gained some recognition. Despite the strong criticism Tori Kelly took on American Idol, she didn't let the negativity get her down. Her viral videos eventually reached Scooter Braun. She then became her manager and signed her to Capitol Records. Well that concludes the video guys, hope you guys did enjoy it, and if you did want to see another one of these videos remember to smack that like button, also let us know in the comment section below what you want to see next, and if you haven't already subscribed please do subscribe to keep up with the world's best videos.