You remember Zac Efron. He's the guy in Neighbors, and you probably recognize him from those nudie photos on the set of the new Robert De Niro movie. Ring a bell? We thought so.
But the actor wasn't always the Zac Efron we know today. He used to be a singing, dancing, musical theater machine. You're also (probably) familiar with One Direction. You might know them from such hits as "What Makes You Beautiful" or "Story of My Life.