Lip Sync Battle seemed pretty awesome after the first clips surfaced online last month, but now we REALLY wanna watch!

Justin Bieber appears in a new teaser for the show, and he dresses up as Ozzy Osbourne in an awesome rendition of the rocker's hit "Crazy Train." From the nail polish to the eyes, the Biebs nails it -- and it looks like he had a blast onstage!

Bieber and Ozzy appeared in a Super Bowl commercial for Best Buy back in 2012, and we're not sure whether the stars stay in touch, but we're hoping the Prince of Darkness loved it just as much as we did! Can't wait to watch the full version of Bieber's performance later this season!

In other news, Bieber recently revealed that he's not looking for a girlfriend, but clearly he's fine with playing the field! A new Instagram photo shows the 21-year-old pop star cuddling up to a hot new babe, but get this -- she's Natalia Skye, the cousin of Bieber's former flame Chantel Jeffries! Skye captioned the pic "Just Friends," but we're not sure if we believe her...