Stephanie Pratt busted for DUI

Stephanie Pratt, sister of the notorious Spencer Pratt, has run afoul of the law.

The 23-year-old star of "The Hills" was arrested on suspicion of drunk driving early Sunday in Hollywood, reports People.

"It was your basic DUI. Our traffic officers driving down the street spotted her and pulled her over," LAPD Sgt. Sal Ogaz tells the celeb mag. "She was cooperative and there were no issues with her arrest."

Pratt was busted around 3:45 a.m. and sent to Van Nuys Jail for booking.

Earlier in the evening, Pratt attended sister-in-law Holly Montag's birthday party at the Empire nightclub.

Follow Zap2it on Twitter for the latest TV, movie and celebrity news.

Related:

'The Hills'' Stephanie Pratt says she's bulimic