Miley Cyrus grows up with new album Breakout

Miley Cyrus is a superstar to millions of teens around the world as Hannah Montana, but it's a more grown-up Cyrus who emerges on her new album, Breakout.

The set is due for release July 22 via Hollywood Records, and the CD's first single, 7 Thing, shot to No. 10 this week on the Billboard Hot 100, tying her career best ranking on the chart.

"It's grown-up," Cyrus told Billboard in an exclusive interview. "I wrote all the songs except two. My last one, Meet Miley Cyrus, was more just meeting me, finding out who I am, and here it's more getting in depth of what's been going on in my life in the past year."

Cyrus pushed to write the songs herself this time around, saying that, "No matter how long what I'm doing here lasts, I want to be a songwriter for the rest of my life. I love it and it's my escape. I just hope this record showcases that -- more than anything -- I'm a writer."

The 15-year-old star found herself in a media firestorm in April when a photograph showing her bare-shouldered, entwined in a bed sheet, was published in Vanity Fair. The portrait, shot by celebrity photographer Annie Leibovitz, touched off a national furore over the sexualization of young girls.

"I was embarrassed," she says in her rapid, self-assured clip, "but also it's like, every career thing that I do can't be perfect, and sometimes my decisions are wrong. I think that just makes me even more relatable."

Cyrus is in the midst of filming the third season of Hannah Montana, as well as a Hannah movie in Tennessee. Her team is also plotting a successor to her runaway smash 2007 concert tour, which drew nearly 1 million fans.