Looking more and more in recent months like the living embodiment of a Bratz doll after a vengeful little brother has had his way with it, it's all too obvious to even the most casual of observer that former chart-topper Britney Spears has come undone. The singer regularly succumbs to manic-depressive episodes that see her indulging in marathon tube-top and fedora shopping sprees one moment, then savagely maiming a defenseless SUV with an umbrella the next. Star magazine now reports that the story has only grown more bleak, describing a "slapfest" between Britney and her mother: