Reality TV star Stephanie Pratt has been arrested on suspicion of driving under the influence (DUI) in Hollywood.
The 23-year-old star of The Hills was stopped by police at 3.45 am on Sunday morning (18Oct09), reports TMZ.com.
Pratt, who's brother is Spencer Pratt and sister-in-law is Heidi Montag, was taken into custody and her bail set at $5,000 (£3,300).
The television star celebrated Montag's birthday at a party on Saturday night (17Oct09) prior to her arrest.
She was still in custody as WENN went to press.