The Wanted have confirmed with MTV U.K. that Justin Bieber will be making an appearance on their sophomore studio album, which is slated for a September release. Over the past months, the band has hinted on Bieber as a potential collaborator on the band's follow-up to their ...2011 album "Battleground." Last October, the U.K. boy band told MTV that they had been writing pop tunes with Bieber while he was completing his ill-fated "Believe" tour. The Wanted continue to say that they also recruited Dr. Luke, Rita Ora and Nasri for their forthcoming full-length. The band recently released their tongue-in-cheek single, "Walks Like Rihanna," which was given the thumbs up by the singer herself.