Justin Bieber celebrates his being 18-years-old in a grown up photoshoot for the June issue of GQ magazine. There, he talks about drinking, trusting issues and what he thinks of Kim Kardashian.

Justin Bieber has been part of the music industry since he was 14-years-old. Four years after, he is undoubtedly one of the most successful breakthrough artists with his millions of followers. He has millions of dollars in his account, a name popular almost all over the world not to mention his rich musical career.

Just recently, he lands at 3rd spot for this year's Forbes Celebrity 100 List. But during the photo shoot and interview, the 18-year-old proves that he has matured over the years. When asked about what it feels like to be allowed partying, Bieber didn't seem too excited about it.

"For me, it's just like, I like to be in control of myself. I mean, I've had a beer, like, before, but I never get out of control,' he told the monthly magazine," he said.

However, the "Baby" singer did have one strong opinion about a certain Hollywood celebrity.

"People say she doesn't do anything, she actually does do stuff. She works hard," Justin said when asked about what he thinks about Kim Kardashian.

And although he did start young at the industry, he also said that he wasn't naïve. The young singer confessed that he guards himself because he thinks there aren't too many trustworthy people in the business.

"I mean, I keep my guard up a lot, because you know, you can't trust anyone in this business. That's what's sad. You can't trust anybody. I learned the hard way," Bieber said.

And when it came down to his music, Justin was far from being modest by what he blurted out

"I've never made a bad song," surely his critics wouldn't miss that strong statement. The singer will release his third album "Believe" next month and is expected to tour by the end of the year.

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