Zac rose to fame in Disney's High School Musical and has since starred in Hairspray and Charlie St Cloud, becoming an international heartthrob in the process.
Find out which stars have made the 'Sexiest Man on the Planet' list.
From Donny Osmond to Charlotte Church, we take a look at the stars who enjoy success throughout their life...
Austrian skydiver Felix Baumgartner is a hit with the ladies in the office. Do you agree?
Former Blue bandmates Duncan James and Simon Webbe have been comparing their six packs while on holiday in Dubai. We take a look at some great celebrity six packs here...just for the hell of it!