Britney Spears: Mood Shifter Extraordinaire

Not only is she the comeback queen of pop, she also reigns supreme when it comes to making a total about face in a matter of minutes! Britney Spears headed to lunch at Marmalade Cafe in Calabasas, Calif. on Tuesday, and one moment looked a bit of a disheveled, confused and bedraggled mess, while the next, she looked perfectly pretty, casually tousled and happy!

While we're fans of the mess updo, the first pony Brit sported, along with her slightly disconnected facial expression, sparked a few worries that she was heading back into the not-so-sane Britney of days gone by.