Justin Bieber Sets Album Record

He's said to be the most-followed person on Twitter, he's hosting "Saturday Night Live" this weekend and now Justin Bieber has another reason to celebrate!

"The Biebs" is now the youngest artists ever to have five number one albums.

He doesn't turn 19 until March!

Bieber's latest album "Believe Acoustic", debuted number one on Soundscan during its first week.

Bieber is just one of a handful of artists to score number-one albums in four consecutive years.