Justin Bieber Stars in New Super Bowl Ad, Shows Off Dance Moves With Rob Gronkowski, Terrell Owens!

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Justin Bieber is showing his sillier side in a new Super Bowl ad for T-Mobile, which features NFL superstars Rob Gronkowski and Terrell Owens.
The 22-year-old "Sorry" singer dons a suit and bowtie for the cute ad -- calling himself a "celebration expert" -- and explains the evolution of touchdown dances. Meanwhile, Gronkowski and Owens hilariously demonstrate.
Later, Bieber gets in on the action, showing off a few choice moves for the camera.
The ad debuted on Thursday, and Bieber is participating in the campaign titled "#UnlimitedMoves." Fans are encouraged to submit their best touchdown dances on Twitter, Facebook and Instagram and tag #UnlimitedMoves, for a chance to be selected as one of the best by Bieber on Mon., Feb. 6, when he'll re-tweet his favorites.
As supermodel Cindy Crawford knows, a good Super Bowl ad can live on forever. ET sat down with 50-year-old Crawford on Tuesday, when she revisited her infamous 1992 Pepsi Super Bowl ad 25 years later. The mother of two revealed she still has the same cutoff jean shorts she wore in the 60-second spot.
"These were the jeans I was wearing to the commercial, and they were like, 'Do you mind if we cut your jeans?'" she recalled. "I'm like, 'No.' So these are them."
Watch below!