Posted on Thu Dec 15, 2011 08:30 AM PDT
Justin Bieber left dinner at Spago in Beverly Hills in a great mood ... even giving us a wave! We're lovin' that smile.
The 17-year-old "Baby" singer will be performing on The X Factor finale, according to HollywoodLife. Now WE'RE smiling, too!
Biebs' performance will include â€œThe Christmas Song" and "Santa Claus is Coming to Townâ€ from his new holiday album Under the Mistletoe. The finale will air on December 22.
Check out our video below of JB hangin' with his ladylove Selena Gomez at L.A. Live. Life is definitely good for Biebs!
Gotta love that custom Cadillac Batmobile! That's how Bieber rolls.
SEE THE GALLERY Justin Bieber Looks Cool In All Black
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