Miley Cyrus's Most Outrageous Moments

Now 18, see how the Disney star transformed from bubbly tween queen to an "untamed" pole-dancing siren

UP IN SMOKE

In a video taken five days after her 18th birthday, Miley Cyrus is seen taking a hit from a bong. But a source says the teen was actually smoking salvia, a legal substance in California that has hallucinogenic effects. "I'm having a little bit of a bad trip," she says in the video, "I want more of that s–."