What Is Justin Bieber's Top Moment?

As Bieber celebrates his 18th birthday, we're counting down his 18 best moments so far. Check out #1!

Moment by moment, we have finally arrived to Justin Bieber's top milestone. This week, we kicked off a countdown of his [article id="1680092"]18 greatest moments[/article], and having already made our way through most of [article id="1680129"]the list[/article], we have reflected on the singer's incredible rise to fame through vintage videos and reliving some of the classic memories that have made Bieber the star he is today.

What else made the list of top Bieber moments? Well, keep reading for the remainder of the list, including our pick for #1.

5. My World Goes on the Road

Kicked off in June 2010 [article id="1642260"]in Hartford, Connecticut[/article],Bieber took the hugely popular tour around the world. With plentiful stops, the spectacle was filled with smooth moves, catchy tunes and tons of love. For his Madison Square Garden show, Bieber brought out famous friends [article id="1646937"]Miley Cyrus and Usher[/article], and he filmed the performance for "Never Say Never." He wrapped up the tour in October 2011 in Venezuela.

4. 2010 Video Music Awards

Bieber went into the 2010 VMAs as one of the biggest pop stars in the world. He took home the Moonman for Best New Artist, got to hang with his [article id="1647665"]pals like Drake[/article], and performed [article id="1647731"]"Baby" and "Somebody to Love"[/article] in a manner fit for past teen idols like the Beatles. "Wow," he said when he took the stage to accept his prize. "This means a lot to me. Thank you to everybody here."

3. Chopping Off His Hair

February 22, 2011 is a day marked in history. It's when [article id="1658412"]Bieber debuted a shorter hairdo[/article], lopping off his signature floppy style. Since then, Bieber has experimented with his hair, but no style has been quite as headline-making as that initial haircut.

"We knew it was going to be a big deal," his [article id="1659195"]hairstylist Vanessa Price[/article] explained to MTV News at the time. "We knew it was going to shock fans, but we also knew it was going to be a change in terms of growing up. I think that's something that people adjust to."

2. 2009 VMAs

At the [article id="1621369"]2009 VMAs[/article], Bieber arrived at the show with Diddy, shouted out one lucky fan and instantly went from Internet star to real-world sensation thanks to the high-profile red carpet debut. And, in the end, he ended up being a part of VMA history. Shortly after the Kanye West/VMA outburst, Bieber and [article id="1621489"]Nick star Miranda Cosgrove[/article] took the stage to announce Taylor Swift's performance, making him one of the folks involved in turning a negative into a positive.

Five years ago, under the moniker KidRauhl, a very, very, very young (OK, he was 13) Justin posted a YouTube video of himself singing Ne-Yo's "So Sick." Displaying his soulful chops and ear for pure pop melodies, it was the video that kicked off a phenomenon. The videos that followed, where he covered the likes Justin Timberlake and Chris Brown, and the frenzy they incited caught the eye of his now manager Scooter Braun, which led to a heated battle between [article id="1657425"]Usher and Justin Timberlake[/article] to see who would sign the teen dream. Usher won and the rest is, as they say, history.

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Happy 18th birthday, Justin Bieber! Now that we've counted down the superstar's 18 greatest moments, stick with MTV News as we celebrate the milestone all day.

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