Ever since Britney Spears famously lost her shit a few years back, there's always been an air of anticipation around her tenuous normalcy. If you read The Superficial at all, you know that Britney Spears has been walking around in bikinis an awful lot lately. Last night on Late Night with David Letterman, Spears took her bikini tour a little bit further, and did the entire "Top Ten" sitting on a desk, wearing a bikini. In a lot of people, this kind of behavior would just be construed as eccentric, but in Spears, well, hopefully she'll keep all of the hair on her head, and stay away from cars and umbrellas.