Zac Efron over the years: 21 sexiest stares (Photos)

Slideshow posted in Photos | Wednesday, September 18, 2013

10 of 21: Zac Efron appears on the set of the film 'That Awkward Moment' (formerly titled 'Are We Officially Dating?') in New York on Dec. 20, 2012. ( Photo / Adam Nemser / Startraksphoto.com)