It's hard to believe that just a few short years ago, Zac Efron was a cutesy Disney star. How quickly this former "High School Musical" heartthrob has grown! In honor of his 25th b-day on Oct. 18, we've put together some of the yummiest pictures of Zac around. Think of it as a birthday present to you.
Zac nonchalantly musses his hair -- and shows off his toned biceps.