You've Never Seen Zac Efron Look So Ripped

Zac Efron's shirtless physique was on display during an afternoon of rope swinging in Oahu, HI, with his Mike and Dave Need Wedding Dates costars Adam DeVine and Aubrey Plaza on Sunday. We have to say, of all the times we've seen Zac shirtless, this might just be his hottest yet!

Zac has been on the island working on the movie for the last few weeks but has managed to fit in plenty of time for his own tropical adventures. He and girlfriend Sami Miró hit the beach at the end of May, and he also met up with Aubrey and Adam for a hike over Memorial Day weekend.