How in the hell did Britney Spears fall this low? Who is she? If you've been living under a rock for the past ten years or, you know, engaging in meaningful discourse and bettering our society, you might not know! But now you need to. At least enough to bluff. Because people will be talking about her graceful swan dive. So, let's get you informed. After the jump you'll find a handy timeline of this troubled chanteuse's glorious supernova of a life.