Actress Heather Locklear, 47, was arrested yesterday afternoon in Montecito after an area resident alleged she was "driving erratically," according to the Associated Press. Her vehicle was parked on a state highway when she was approached by a CHP officer, who "determine[d] that she seem[ed] to be under the influence of something," and then took her the local police station for testing. "She was booked at 7 p.m. on suspicion of driving under the influence of prescription medication. She was later released from custody."