Writer Ian Halperin has told In Touch magazine that Britney Spears is "highly unstable". Which she may be, though we should note Halperin has a vested interest in us thinking Britney is still a bit loopy, given he's just published a new book called 'Stalking Britney: Britney Under Siege'.
He told the US c'leb mag: "She's on a high right now, but her life goes in circles. It's like a roller coaster ride. She's a person who is highly sensitive, and just one little thing could set her off. There's no doubt, based on the last two years, that she is a highly unstable person. At 15, she had a huge breakdown and had to return home to Louisiana. She was very insecure and felt like she wasn't pretty".
So, now we know. Books like that written by Hapleroin presumably do much to help Spears remain stable.