Justin Bieber is aiming to become the next Justin Timberlake and he's hired superstar songwriter Sean Garrett to help reshape his sound.
The teenage pop star is currently working on the follow-up to his hit album My World 2.0. and he's collaborating with Garrett, who has written songs for Usher, Ciara and Britney Spears.
Garrett admits 16-year-old Bieber is aiming for a more grown-up sound on
