Well, well, well!  How about this guy!  Growing up, looking good, selling stuff!

T-Mobile hired Justin Bieber to star in one of their Super Bowl ads, and he's showing off a new, mature look.

The ad also features Rob Gronkowski and Terrell Owens and a cute, sassy little girl

Nicely done!

Plus, the message is to dance!  #unlimitedmoves oh, also I think to buy T-mobile stuff...