Zac Efron clearly has no problem showing off his famous abs , but it seems he's a little more squeamish when it comes to rocking a thong in public. The year-old star has been filming his upcoming comedy Dirty Grandpa in Georgia since late April, and plenty of nearly naked photos have surfaced from the production. So when a scene called for Efron to strip down to a tiny thong, the star reportedly refused -- probably because he knew they would surface online in a matter of minutes. That's when the producers had to call in Efron's butt double which, admittedly, would be amazing to have on a resume. To his credit the former High School Musical star did strip down to a pair of flesh-tone briefs, but he left the real thong-wearing, motorcycle-riding to a professional. When Efron isn't busy getting naked in front of the cameras, he appears to be spending quality time with his girlfriend Sami Miro. The young model was spotted visiting her boyfriend on set, and the couple even found time to go jogging on the beach. The couple also reportedly took Efron's one day off from shooting to take in a ghost tour of historic Savannah.
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By Lucy Mapstone for MailOnline. He's one of Hollywood's hottest hunks, with a rock-hard body to be proud of. The year-old stripped off to nearly nothing as he hopped on a motorbike, wearing nothing but a flesh-coloured thong to protect his modesty, and little socks. Scroll down for video. On your bike! Zac Efron stripped off to nearly nothing, flaunting his honed and toned physique on a motorbike while filming a scene for new movie Dirty Grandpa in Tybee Island, Georgia on Tuesday. His rippling physique and broad shoulders stood out in the midst of filming, his bulging biceps and perfect pecs stealing attention as he focused on keeping his balance on the vehicle. He also revealed his sizable thighs as he straddled the green cycle - from afar, he looked as though he was completely naked himself, just enough to make the scene in the upcoming comedy flick believable.
The German version of the trailer shows the Hollywood hunk flaunt way more skin. Christmas must have come early, because Zac Efron just got full frontal naked in the latest trailer for Dirty Grandpa. Teaming up with Robert DeNiro for the boys gone wild road-trip movie, Efron shows off quite a bit of skin in the German version of the trailer and thankfully we can see it too. After a heavy night partying at Daytona Beach with the godfather legend, who is playing Zac's recently widowed grandfather, the High School Musical stud finds himself without any clothes and only a child's toy to protect his modesty. We've already seen Zac doing the Macarena in nothing but his birthday suit in the Dirty Grandpa trailer. The plot sees Zac playing groom-to-be Jason who's dragged on a trip by his naughty grandad Dick, played by Robert De Niro. Zac's character starts out as a bit of goody two-shoes but eventually he does let his hair down - with eye-catching results. By Rebecca Merriman. Video Loading Video Unavailable. Click to play Tap to play.