'One Time' was followed by the release of singles such as 'One Less Lonely Girl', 'Love Me' and 'Favourite Girl'.
During a promotional tour, Justin Bieber was due to appear at a shopping mall in Long Island, but the visit had to be cancelled when an unexpected crowd of over 3,000 turned up and threatened to breach safety restrictions.
which was his first number one single on the Billboard Hot 100.
These videos were seen by the record company executive Scooter Braun, who flew Bieber to Atlanta to meet and perform in front of Usher. Bieber moved to Atlanta with his mother, so that Justin could work more closely with Usher and Braun.
Career: Justin Bieber's debut album was entitled My World and was released in November 2009.
A number of Bieber's fans suffered minor injuries n the foray that ensued.
The vice-president of Island Records was arrested over the incident, as he was reported to have disadvantaged the police's crowd control efforts.
Bieber was also chosen as a presenter at the 52nd Grammy Awards.
Bieber was also asked to perform on the re-recording of 'We Are the World', which was sold to raise money for victims of the Haiti earthquake.
2011 also saw him star in his own biopic movie 'Justin Bieber: Never Say Never' directed by Jon Chu.
It topped the box office with a .4 million gross on its opening and he subsequently released a remix album entitled 'Never Say Never - The Remixes'.
He promoted the release with appearances on 'The View', the 2010 'Kids Choice Awards' and 'The Late Show with David Letterman' among others.
Later that year he was a musical guest on 'Saturday Night Live' and he also went on his first headline tour 'the My World Tour'.
In April of that year, Bieber was a guest on Saturday Night Live and was the subject of a comedy skit featuring himself and regular Saturday Night Live comedian Tina Fey.