Stephanie Pratt was arrested for suspicion of driving under the influence at 3:45 a.m. Sunday in Hollywood, according to

Pratt, 23, was still in custody yesterday morning. Her bail has been set at $5,000 US, reports. Pratt has admitted to having an addiction to drugs and alcohol. She recently opened up to Us Weekly about her battle with bulimia.

“The more I can stress about being honest, (the better),” she told Us. “You are as healthy as your secrets.”