Justin Bieber Enlists Derek Zoolander to Promote 'Purpose' - Watch Now!

Justin Bieber takes the stage for a surprise performance at the 2015 BBC Radio 1 Teen Awards held at Wembley Arena on Sunday afternoon (November 8) in London, England.

The 21-year-old entertainer sang his hits “Where Are You Now?,” “What Do You Mean?,” and “Boyfriend.” Click inside to watch his performance!

Also making appearances that night were Rita Ora and Chris Martin.

Meanwhile, as Justin gears up to drop his new album Purpose, he enlisted the help of his pal Derek Zoolander (Ben Stiller) to promote! Watch below!

Click inside to watch Justin Bieber perform…