Zac Efron’s Shirtless Instagram Photos: Ranked!

We could tell you that we love Zac Efron, 28, for his mind, but that would be a dirty lie. We’re really just obsessed with his shirtless photos — when did little Troy Bolton morph into the Incredible Hulk? — and apparently so is he, because he keeps posting ’em. In honor of his return to the big screen in Neighbors 2: Sorority Rising, in which his ripped bod is on full display, we count down his hottest shirtless social snaps.