Penn son in drug bust

THE ACTOR son of Hollywood veterans Sean Penn and Robin Wright was reportedly arrested for drug possession in Nebraska this week.

Hopper Penn, 24, was pulled over Wednesday while driving in a car with actress Uma von Wittkamp in the Cornhusker State, according to TMZ.com.

During the traffic stop for failing to signal, the cop reportedly detected drug activity and decided there was probable cause to search.

Police found 14 grams of marijuana, four amphetamine pills and three grams of mushrooms, the website said.