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Zac Efron made everyone's dreams come true on Thursday when he posted a shirtless photo of himself on Instagram. A day after he twerked in leather pants [3] on The Ellen DeGeneres Show, the Dirty Grandpa actor was getting ready for his appearance on Jimmy Kimmel Live and decided to share a backstage moment with fans. In the snap, Zac shows off his insane muscles while sitting in a chair getting his hair done. "I woke up like this @jimmykimmellive #dirtygrandpa," he wrote.
Of course, this isn't the first time the world has gotten to stare at the actor's beauty. In addition to showing off his physique [4] in the upcoming film Neighbors 2, Zac has also posed for pictures with his superhot younger brother [5] and flashed his biceps [6] like there's no tomorrow. See his latest snap above, then follow these 25 easy steps to get over your decade-long crush on him [7].