February 2007: After a month of manic partying dancing on tables, getting dirty with pole dancers, allowing her lady parts to be photographed by the paparazzi and going in and out of rehab, Britney shocks the world by shaving her head at a salon in Tarzana because, she claimed at the time, her extensions were giving her a headache. The general public grows concerned for her welfare, and she finally enters, and stays, in rehab.
March 2007: Britney is released from rehab and her managers say she is fully recovered. (AFP / Getty Images)