Channing Tatum dressed up as Elvis to prank some unsuspecting office workers in the US.

In a video to help promote the Omaze charity and the upcoming launch of Tatum's Las Vegas stage show Magic Mike Live, the actor waited in the elevator in an office building and tried to convince people to follow him up to the 17th floor.

Most of the confused workers reluctantly agreed to go with the Elvis impersonator who promised them a Las Vegas style party.

When the doors opened on the 17th floor, the workers were stunned to see poker tables, a DJ and even some male strippers.

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But the biggest surprise came when the Elvis impersonator removed his wig and Channing Tatum revealed his true identity.

Check out the hilarious video below: