Justin Bieber was named the winner of the first-ever Milestone Award, presented by Chevrolet at the Billboard Music Awards in Las Vegas.

Billboard Music Awards 2013: All Our Coverage

In its inaugural year, the fan-voted award highlights artists who have achieved some of the year's most impressive chart milestones. Bieber captured the award with an assist from his 36 million devoted Beliebers, whom he constantly interacted with via Twitter during his extensive touring over the year. When his album "Believe: Acoustic" hit No. 1 on the Billboard 200, he became the first artist under 19 with five chart-topping LPs.

Bieber accepted the award with a rather candid speech. After taking a moment to bask in his moment, he announced, "I'm 19 years old. I think I'm doing a pretty good job."

The theme shifted to his own work: "From my heart I really just want to say it should be about the music, about the craft," he said. "This is not a gimmick. I'm an artist and I should be taken seriously."

Bieber beat out fellow finalists Bruno Mars and Taylor Swift. The trio were chosen in mid-April out of a pool of nominees that also included the Band Perry, Miguel and Pitbull.

Beginning April 1, fans voted for their favorite nominees on Billboard.com/milestone. Voting continued through the live airing of the awards, until presenter Cee Lo Green announced the winner towards the end of the evening.