Miley CyrusPop-ed: It's 2010 and Hannah Montana is all grown up. Well, at least that's what Miley Cyrus wants you to think. As the Disney megastar approaches legal age, she continues to toy around with a decidedly more sexual and provocative persona (most recently at this weekend's MuchMusic Video Awards) than her legions of prepubescent fans have grown accustomed to over the years, raising the question of whether or not the 17-year-old is moving just a little too fast. So what's the big deal? Let's not forget that the jump from child star to sex object is, at this point, business-as-usual in the pop sphere. Of course, some leaps have been more successful than others, and for every Britney Spears-level success there's also an Amanda Bynes that never fully connects to life on the other side of teendom (the actress went as far as announcing her retirement from the business this weekend). After the jump, we break down the seventeen and sexy dilemma -- is Miley in over her head, or does everyone just need to chill out?