The acclaimed writer told Metro that the Man of Steel has been given a "contemporary" makeover as part of DC Comics' company-wide overhaul.
"With what we're doing he's wearing jeans and a T-shirt - a Bruce Springsteen version of Superman, that's the angle we're taking. The cape's still indestructible but the rest is picked up in a shop," he said.
Morrison, who is writing DC's new ongoing Action Comics title, also said that the latest take on the superhero draws inspiration from the original 1938 incarnation.
"I want to solve some of the problems that have grown up around the character. People now ask, 'Why the hell would he dress up like that?' I want to make Superman a more contemporary character," he explained.
"We'll be changing how he looks, dresses and behaves. He'll be more like the Superman who appeared in 1938 - more socially active and a champion of the oppressed."
Action Comics #1 arrives in stores in September.