VIDEO : Ben Stiller Confirms Justin Bieber's Zoolander 2 Cameo

The Zoolander 2 cast keeps getting bigger!
Ben Stiller confirmed that Justin Bieber will make a cameo in the long-awaited sequel. The actor, who reprises his role as male model Derek Zoolander, did his best "blue steel" during a pose-off with the pop star on Instagram Tuesday. Stiller didn't provide further context,
Rumors of the pop star's casting started swirling on Sunday, when Bieber flew from L.A. to Rome.