Justin Bieber

2010: Bieber launches headlining tour in June, selling out dates and causing fan frenzy in United States and Canada. Videos continue to draw enormous traffic on YouTube. Twitter followers spill over the 6 million mark.

2010: Collects several trophies for his case, including four Teen Choice Awards, four American Music Awards and MTV music awards in various countries.

2010: HarperCollins publishes his official biography, “Justin Bieber: First Step 2 Forever: My Story,” in October.

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2010: “My Worlds Acoustic” CD is released in late November for holiday shopping season, with remixes of previous material and new song, “Pray.”

2010: Comic-book biography from Bluewater Productions, “Fame: Justin Bieber,” sells out. Expanded edition, “Fame: Justin Bieber: The Graphic Novel,” set for release in March.

2011: “My World” tour goes global, January through May. Stops include England, Spain, Italy, Indonesia, Israel, Australia, Japan.

2011: Stars in 3-D concert film, “Justin Bieber: Never Say Never,” set fo.