Justin Bieber Hints That He Will Perform On 'X Factor'
Description:Justin Bieber was recently a guest mentor to L.A. Reid's team on the 'The X Factor' singing competition. The 'Boyfriend' singer tweeted, "Congrats to those going thru to the live shows on @thexfactorusa. Good Luck L.A. Reid, maybe i will come perform something from #Believe ;)".(0:45)