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Justin Bieber and Pitbull light up the 'DWTS' ballroom

Justin Bieber performed on 'Dancing With The Stars: The Results Show' on Tuesday, September 25, 2012. He sang his second single off his 'Believe' album titled 'As Long as You Love Me.' <span class=meta>(ABC Photo/ Adam Taylor)</span>
October 16, 2012 8:07:42 PM PDT