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31 October 2012, 14:12
The Canadian singer gave renditions of two of his 'Believe' hit singles alongside the YouTube star.
Justin Bieber can be seen miming along two his hit songs 'As Long As You Love Me' and 'Beauty And A Beat' with internet celebrity Kennan Cahill in a new video posted by the pair.
The 'Boyfriend' singer emerges shortly after the clip begins with the pair sharing lip-synching duties on the two tracks.
The YouTube star rose to fame when he lip-synced along to Katy Perry's 'Teeenage Dream' back in 2010 and has performed videos alongside the likes of Maroon 5 and 50 Cent in the past.
Justin shows off his torso and rides around on a Segway at various points in the clip as they perform the songs.
The Canadian singer is currently touring the world on his 'Believe' outing, which will head to the UK in early 2013.
You can watch Justin and Keenan performing their lip-syncing version of the tracks below:
Meanwhile, Justin recently debuted his new tattoo, which features an owl design on his forearm.
He also opened up on his fear of flying which has developed from excessive tour dates across the globe.