Justin Bieber Subs In for James Corden on 'Late Late Show'
The 21-year-old singer made a surprise appearance by opening the show with the monologue while James was still backstage getting ready. He ran out on stage in the middle of the monologue in his bathrobe and a towel wrapped around his head!
James tried to kick Justin off the stage, but the audience erupted in boos. He then let Justin come back out and finish up the monologue. Watch below!
Justin Bieber Takes Over the Monologue