(7 pm: Britney went to a hair salon on Ventura Blvd in the San Fernando Valley. Apparently she had called someone from the salon, which was closed, to come back and open the doors just for her. Our photographers say she was crying in the car for ten minutes before she went inside -- you can even see wet tear stains on her sweatshirt. She then went inside and did the deed herself -- picking up the shears and shaving her head.)

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