Miley Cyrus Friends: 'She Was Just Having Fun'Miley Cyrus isn't too worried about the video that surfaced last week of her taking hits from a bong reportedly filled with a natural herb called salvia.

Friends of the 'Hannah Montana' star tell TMZ that Miley told them "she's just young and having fun."

A friend was quoted saying, "Miley doesn't care. She's filming her movie ('So Undercover') and getting on with her life."

Miley's father, Billy Ray Cyrus, took to Twitter when he learned of the video, writing, "Sorry guys. I had no idea. Just saw this stuff for the first time myself. I'm so sad. There is much beyond my control right now."