In the upcoming issue of
Rolling Stone, contributing editor
Josh Eells shadows
Justin Bieber for a week as he battles paparazzi at a Los Angeles golf course, appears on the
The Tonight Show, hits the studio and much more. Justin is only 18, but he says he feels like he's become significantly more mature over the last couple of years. "I feel like I carry myself in a more manly way," he says. "I don't carry myself ...