10 Celebs Attended Justin Timberlake's LA Concert, Including 2 Stars Without Their Musical Girlfriends

Justin Timberlake took the stage to deliver a free concert for fans at the Wiltern Theatre on Wednesday night (March 13) in Los Angeles, and he had more than a few celebrities in attendance. The exclusive show featured three musical acts who joined him onstage. That includes one who helped him perform his Beyonce duet.