Stephanie Pratt, star of reality TV show “The Hills” and sister to King Spencer, is said to move to a rehab facility for thirty days.

The reality starlet was arrested last October 18 for suspected DUI charges after leaving sister-in-law and “The Hills” co-star Holly Montag’s birthday bash in Hollywood.

Steph pleaded not guilty to the charges last Friday, says People magazine.

She was already previously arrested last May 2006 for shoplifting charges.

Photos by Wenn.com