Justin Bieber joined a popular DJ onstage and performed at a Las Vegas nightclub. Except that he didn't. Gryffin, a San Francisco-born DJ and music producer, was performing at the XS ...

Los Angeles-based DJ Gryffin, who was playing at the party, apparently was told that Bieber was in town and wanted to belt out a few of his hits. The imposter, dubbed “Bustin Jieber” by Gryffin, was ...