Justin Bieber has uploaded a new shirtless selfie of himself, which includes the pop star’s hardworking trainer trainer.

Beiber, in his latest half-naked contribution to Instagram, shows off his increasingly defined 6-pack and bulging biceps. Dressed in only a pair of gym shorts and a hat, Bieber points to his trainer Patrick Nilsson to his left. Nilsson, who’s grinning at his work in the picture, has been putting in the time with Bieber to help him achieve the physique he wants.

“I want him to look like Marky Mark,” Nilsson, 29, told Newsday. “I feel like this is what he needs to get where he wants to be. He’s definitely leaner and a lot stronger. His chest and shoulders — we need to build those up,” Nilsson explained. “It’s all about looks.”

“It’s more about making sure he eats,” Nilsson added. “He’s the only client I allow to have McDonald’s whenever he wants.”

On Monday, Bieber released the first single off his new album, “Heartbreaker.” He’ll be releasing a new track each Monday for the next 10 weeks for his promotion “Music Mondays.” Bieber has one more tour stop in Asia before he heads to Puerto Rico for an Oct. 19 show and continues on through Central and South America.

– Chelsea Regan

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