PIC: Check Out Justin Bieber's Shocking Big Game Makeover

Justin Bieber's going back to the future!

The teen singer underwent a complete makeover to appear in Best Buy's inaugural Super Bowl commercial, which aired during Sunday's Packers-Steelers showdown.

The 30-second spot featured an aged Bieber, 16, clad in a tee of his own likeness and sporting a mustache and beard combo that rendered him unrecognizable.

Promoting the brand's new technology buy back program, Bieber appeared in the spot opposite Ozzy and Sharon Osbourne. "What's a Bieber?!" Ozzy joked. The singer's quick-witted reply? "I don't know. It kind of looks like a girl."

During the commercial's shoot in January, Bieber appeared to drop a few hints on Twitter.

"Can't really say what I'm up to today but when you guys find out it's gonna be funny as heck," he wrote on January 17, adding, "#todaywasepic."

Order your copy of the new Us Weekly's Justin Bieber: My Private World

"We're delighted to have Justin and Ozzy help us tell the Best Buy story," Drew Panayiotou, senior vice president of U.S. marketing at Best Buy, told UsMagazine.com in a statement at the time the pair's collaboration was announced. "We know people have high expectations for these ads, and Justin and Ozzy add a whole new dimension of fun."