"The Hills" star Stephanie Pratt was busted on suspicion of driving under the influence this morning in Los Angeles.
According to E! News, Pratt was arrested at 3:45 AM in Hollywood, then taken to jail in Van Nuys. A spokesperson for the LAPD confirmed the arrest, and told E! that Stephanie is still locked up with her bail set at $5,000.
Pratt and several of her co-stars went out Saturday night to celebrate Holly Montag's 26th birthday at Los Angeles club Empire.
UPDATE: Pratt, pictured with Holly Montag and Stacie Hall, celebrate Holly's birthday hours before the arrest.