Teenage pop sensation Justin Bieber is officially the most popular artist on YouTube.com after becoming the first star to reach two billion video views.

The Baby hitmaker's music page attracted 94 million visitors in the past month alone to go down in virtual history.

Bieber beats chart rival Lady Gaga to the feat, even though the Poker Face singer was the first artist to crack the one billion barrier last year (Oct10).

The pop pair leads the pack as the most-viewed stars on the video-sharing website - Rihanna, Eminem and Shakira round out the top five.