Actress Julianne Moore sympathises with Britney Spears during her ongoing custody battle, because the pop superstar has "never been allowed to grow up". Magnolia star Moore believes the 25-year-old former child star is so isolated she must find it difficult being a mother-of-two. She says, "The Britney Spears thing - you can't be a mother until you've been an adult first and she's never been allowed to get there because she was working all the time as a child. "So how do you learn to be a grown-up? And then you're suddenly a parent."