Starring ... Inmate #1085109!

Here is the booking photo of Kiefer Sutherland from the Glendale City Jail. The "24" star checked in tonight to do 48 days for a DUI conviction.

He'll spend his birthday, Christmas and New Years in the slammer.

As for what he brought with him to jail, we're told reading material and underwear. The jail, fortunately, does not provide unmentionables. Now you know.