Lowlights include : November 2006 , when she filed for divorce and initiated a seemingly endless string of court dates ; February ' 07 , when she left one rehab center to shave her head bald at a beauty salon , only to check into a new rehab center afterward ; July ' 07 , when she took Sean Preston and little bro Jayden James on an illegal jaunt to Las Vegas and proceeded to get into a fight with paparazzi ; and January ' 08 , when an apparent mental breakdown led Spears ' family to force her to undergo psychiatric evaluation and entertain a consult with TV shrink Dr. Phil .