The single comes from her latest album, 'Can't Be Tamed,' which Miley, 17, says is about female empowerment.
"It's just about freeing yourself from anything you think is holding you back," she told MTV News. "And I think that's really important, especially for girls, because so many people are told, 'No, you can't do something,' or, 'You need to be this because Mom and Dad say that, teachers say this.' "