Justin Bieber has come a long way since the days of his signature shaggy haircut and adorable baby face. Just look at the 21-year-old pop star on the cover of Men's Health magazine, baring his shirtless, tattooed body for the masses. But can we belieb it's all him? Multiple reports suggest that while Bieber has certainly bulked up over the years, the flawless physique we see on this cover is thanks, in part, to Photoshop.

Fortunately, while shooting the cover, Bieber filmed a behind-the-scenes video in which he addressed his new figure and shut down any Photoshop rumors.

“Being on the cover of 'Men's Health' is really, really cool," he says in the video. "I love the fact that I got in shape the past two years, and I'm finally getting recognition for it.”

“It's not Photoshopped for all you fools out there saying it's Photoshopped,” he added.

Even the magazine's social media team couldn't help but poke fun at the situation. In a recent tweet Men's Health quipped:

Within the magazine's glossy pages, Bieber talks about some of his poor decisions, his struggle with being famous and the trouble it's landed him in over the last few years. According to People magazine, the pop star told Men's Health, “It's time for me to grow up.”

“This has really been a big year for me, as far as figuring stuff out. This is almost like a full 180 from how I was. Yesterday – a year from yesterday – I was in jail,” he added.

This isn't the first time viewers have accused Bieber of being digitally enhanced. In January, photos of him taken for a Calvin Klein campaign hit the Internet. The photos show Bieber wearing nothing but his Calvins, but it wasn't his underwear that people were staring at -- the Canadian-born singer's bulge stole the show. Amid the controversy, BreatheHeavy.com posted photos they claimed to be the unretouched version of the shoot. The photos were later taken down after Bieber's legal team contacted the site.

Bieber's trainer, Patrick Nilsson, quickly came to his defense, saying, “I can definitely confirm that he is a well-endowed guy. I sound weird saying that, but yes.”

Bieber's been hard at work to prove to fans and haters alike that he's ready to shed his bad boy image. He's appeared on the “Ellen DeGeneres Show” multiple times within the last few months to apologize for his behavior and prove that he's a new man. Now, he's hitting the Comedy Central stage alongside some of Hollywood's most hilarious for a roast of himself. Promotional ads for the roast have even gone as far as to spoof the aforementioned Calvin Klein ad.

The comedy Central Roast of Justin Bieber airs Monday, March 30, at 10 p.m. EST on Comedy Central. Be sure to check it out.