Happy being Miley Cyrus

MILEY Cyrus has spent the past 10 minutes laughing and playfully bickering with her older sister, Brandi, during a phone interview. But the laughter stops when a few sentences from the press materials for Hannah Montana: The Movie are read aloud.

"Miley Stewart (Cyrus) struggles to juggle school, friends and her secret pop star persona" the press kit says. "When Hannah Montana's soaring popularity threatens to take over her life, she just might let it."