Spears' police escort included motorcycles, two cruisers, and two helicopters.
On Jan. 3, police were called to her home when she refused to return her two young sons, Sean Preston, 2, and Jayden James, 1, to ex-husband Kevin Federline, who has custody.
Officers had paramedics haul Spears to a hospital for undisclosed reasons. She was released after a day and a half in Cedars-Sinai Medical Center.
Police also went to the home Monday night after someone reported a swarm of paparazzi trespassing in the singer's gated community. When officers arrived, they didn't see anyone trespassing, police said, but citations were issued for several illegally parked cars.
Spears has been in a highly public downward spiral since filing for divorce from Federline in November 2006.
Her bizarre antics include shaving her head bald, attacking a car with an umbrella and bringing along a paparazzo pal on trips to a courthouse in her child custody case.