Happy birthday, Zac Efron! This Hollywood hottie is turning 27 today! There are countless reasons as to why we, and the rest of the world, love this stud of an actor. First of all, Efron is a quadruple threat: he can sing, he can act, he’s hilarious and he has those abs! Let’s take a look back at all the times the actor dropped jaws with his perfect muscles. Let’s take a look back at all the times the actor dropped jaws with his perfect muscles. In The Lucky One, Efron gets steamy with Taylor Schilling, giving us all the more reason to love him. Then, in Neighbors and That Awkward Moment, we find Efron shirtless and even butt naked!