Pictures of Justin Bieber at the Rosemont in Chicago

Miley Cyrus, Demi Lovato and Joe Jonas weren’t the only one’s performing last night! Justin Bieber was in Chicago at the Rosemont rocking the house, celebrating this week’s release of his second album, My World 2.0., and below are some pics from the event

I’m thinking Bieber has taken the title of busiest cat in show business at least for this week, as yesterday we brought video of himperforming