1. Justin Bieber
You may not be familiar with the fact that Justin Bieber started in Ontario Canada by uploading videos to YouTube of himself performing R&B songs. He attracted the attention of his future manager Scooter Braun only seven months and ten thousand views later. Bieber signed a contract with R&B singer Usher at the age 13. To this day he sold more than 15 million albums around the globe, placing him on No.1 on our list of the 11 celebrities who got famous from YouTube.