Josh Duhamel and Julianne Hough join in on the Harlem Shake craze (VIDEO)

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There’s nothing like a YouTube trend hitting the celeb world. Last Sunday at the Berlin premier of that chick flick Safe Haven, Josh Duhamel, Julianne Hough and the audience all starred in a Harlem Shake video!

Their Harlem Shake video begins with Josh dancing with a German flag in his hand, followed by Julianne and the audience joining him halfway through. It’s something easier shown than explained… Check it out!