12 Things Justin Bieber in Concert

Even by teen-sensation standards, it has been a big week for Justin Bieber.

The Canadian pop singer announced Monday that he will star as himself in a 3D biopic to be released in time for next Valentine's Day.

And he says he's also at work on a memoir, due in October. The book is titled Justin Bieber: First Step 2 Forever: My Story. A comic book about the 16-year-old singer also comes out in