Concerns have grown for Britney Spears, who was arrested last night for Driving Under the Influence, TMZ claims, in what's been described as an emotional incident. It's also believed the pop icon was booked early this morning (March 5) at approximately 3 am, after being handcuffed by California Highway Patrol at around 9:30 pm the previous evening. It's understood Britney, 44, was released at around 6 am this morning, as per Ventura County Sheriff's records, and is now scheduled to appear in