Cassie Scerbo rocks her studded skirt as she arrives at Rolling Stone LA and Chinese Laundry’s “The Mad Musician” held at Rolling Stone Lounge in Hollywood on Friday night (August 5).

The 21-year-old actress’s new flick, Teen Spirit, premieres TONIGHT — in just a half hour, to be exact.

Cassie recently chatted with TVGuide about her character and what she learns in the movie: “Amber stars to realize the way she’s been acting her whole life isn’t right and it took seeing it in someone else for her to make the change.”

Teen Spirit premieres TONIGHT @7PM ET/PT on ABC Family.

10+ pics inside of Cassie Scerbo…