Justin Bieber + Friends: Jaden Smith

Justin Bieber and Jaden Smith both grew up in the spotlight, granted in different ways. Bieber created his own, while Smith split his with his parents (Will Smith and Jada Pinkett-Smith) and lil' sis Willow.

The duo have collaborated on 'Never Say Never,' the track that inspired Bieber's movie title, and they got on so well that they kept it going. They've covered Frank Ocean's 'Thinking About You' together, as well as 'Happy New Year.'

Another thing the duo likes to do together? Wear matching outfits and "swag boots." Seriously, how cool are these two?