You're never too young to write a memoir.
Sixteen-year-old Justin Bieber's book comes out in October. HarperCollins announced the pop star's memoir on Monday, saying "Justin Bieber: First Step 2 Forever: My Story" will reveal the teen sensation's "amazing journey to stardom."
The book also will include previously unseen photos for "fans afflicted with Bieber fever."
In a statement released by the publisher, Bieber says he is "excited to share just a little bit more of my world."