Justin Bieber has joined the cast of Zoolander 2. Check out his 'blue steel' pose below.

The 21-year-old Baby hitmaker shared a snap on Twitter which sees him posing alongside Ben Stiller.

'The Biebs' had previously hinted at a cameo in the movie on Facebook, telling fans that he was “working on something big” in Europe.

He then wrote: “To learn more follow me on Fahlo. He is so hot right now”.

Bieber joins an A-list cast that also includes Penelope Cruz, Billy Zane, Fred Armisen, Will Ferrell, Kristen Wiig and Lewis Hamilton, as well as returning stars Stiller and Owen Wilson.