Justin Bieber has broken another record!
The "Boyfriend" singer, and most-followed person on Twitter, has become the first artist in history to score five No. 1 albums before the age of 19.
The Biebs' has also become the 10th musical act ever with No. 1 albums in four consecutive years as his latest, Believe Acoustic, skyrockets to the top of the music charts, as well as iTunes.