Zac Efron Ran Every Day to Trim Down for 'We Are Your Friends'

Zac Efron wears a cool blue jacket while arriving for the premiere of his new film We Are Your Friends held at Showplace Icon Theater on Wednesday evening (August 19) in Chicago, Ill.

The 27-year-old actor was joined on the red carpet by his co-star Emily Ratajkowski and director Max Joseph.

Zac recently revealed that he lost weight for the role.

“Max just said, ‘Hey dude, look at these guys,’ and he just showed me a bunch of pictures and I’m like, ‘Um, clearly I should…that’s not who I am at this moment.’ And so I just trimmed my diet,” Zac told E! News.

He added, “I ran every day, more or less. I just stopped lifting weights. At the end of the movie I had like shin splints, my knees hurt, it was gnarly. Running’s hard.”

FYI: Zac is wearing a Kenzo jacket. Emily is wearing Marc Jacobs.

25+ pictures inside of Zac Efron premiering the movie in Chicago…