Britney Spears pleaded guilty to a "wet reckless" driving charge following a chaotic March 4 traffic stop in Ventura County where police observed erratic driving and discovered unprescribed medication.While her blood alcohol level remained below the legal limit, the singer admitted to consuming alcohol and using prescription drugs during the encounter.Spears subsequently entered a rehabilitation program and agreed to twelve months of probation and mandatory counseling as part of her judicial resolution.