Oh man. I typed this as a joke, not actually thinking anything would turn up. But yes, it seems that his fans are using this as a legit verb.

Bieberize (verb)
1. a. The act of turning a person or an object into Justin Bieber.
    b. To inject the essence of Justin Bieber into a someone you don’t really love.
EXAMPLE:
She Bieberized him in the eyes so he’d have those Bieber eyes.