You Tube star Keenan Cahill is famous for his awesome videos lip-syncing to the biggest hits in music! Keenan’s amazing & the celebs he covers sure have noticed – and so many celebs have popped up in his videos including Katy Perry and Perez Hilton!

For his newest viral video, Keenan takes on a mash-up of Bieber’s As Long as You Love Me and Beauty and a Beat! And of course, there’s a special appearance from Justin Bieber himself!

Chelsea Briggs has the viral vid and more in today’s Hollywire Hot Minute!