Justin Bieber and a fan // Q102 Jingle Ball in New Jersey

Pop singers Jordin Sparks, Jay Sean and Justin Bieber, who performed in a cast due to his fractured foot, took the stage Wednesday night (Dec 9) in Camden, New Jersey for the Q102 Jingle Ball at the Susquehanna Bank Center.

15-year-old Justin Bieber performed on his acoustic guitar during  his “Favorite Girl” song and surprised a fan out of the audience with roses and a serenade. The second part of his debut solo album My World drops in March 2010.

Continue reading for more pics from the concert!

PHOTOS: GETTY / WIRE