Stephanie Pratt joined her Hills costars Stacie Hall and Holly Montag on Saturday night in LA. The girls celebrated Holly's birthday with cake and, apparently, drinks, since Stephanie was pulled over and arrested for DUI on her way home. Earlier in the night, Steph twittered that she was too tired to go out. She ended up spending the evening in jail before being bailed out yesterday afternoon — click through to see her partying pre-arrest.
Stephanie Pratt's Night Out Before DUI Bust