With a pack of photographers following her, Britney Spears arrived at a Tarzana, Calif., salon on Feb. 16, 2007 and proceeded to shear off her own hair in the front window. The desperate move was the climax of several weeks of heavy partying, erratic mood swings and frightening behavior. The singer ultimately completed a month in rehab and reclaimed her life and her sons, Sean Preston, then 18 months, and Jayden, six months, who were removed from her custody in the aftermath of her breakdown. "I am so blessed that you care enough about me to be concerned," she wrote to her fans on her Web site in May 2007. "I will continue to live in this brighter state with all of you by my side during this trying time."