Justin Bieber Shows Mustache in First 'Believe' Teaser!

Justin Bieber shows off his mustache in a newly released teaser for his upcoming film Believe!

“I keep my promises. U got #heartbreaker to #1 so I owe u #filmfridays .. Here is your first #filmfridays . The #stache lol,” the 19-year-old singer tweeted about the flick, which hits theaters on Christmas.

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The teaser includes his mentor Usher and mom Pattie Mallette talking about how mature Justin has become.

“Speaking of grown men, I’m drinking coffee right now,” Justin joked in the clip. Watch the video below!