Watch Britney Spears: 'Sometimes It Can Get Kind of Lonely' Online

Entertainment Tonight has the latest... ET has another new look inside the Britney Spears documentary, "Britney: For the Record," where she opens up about the drawbacks of fame. "I don't think anyone can prepare themselves for what stardom really brings," she says in the film, airing this Sunday on MTV. "It didn’t really touch home with me -- the whole fame thing -- until I had a huge breakup and I wanted to just stop." She says that despite the fact that she's constantly surrounded by people, she can feel alone.