Nicole Richie served 82 minutes of a four-day sentence for DUI on Thursday due to jail overcrowding, according to the Los Angeles County Sheriff’s Department.

Accompanied by her lawyer and boyfriend Joel Madden, the five-months pregnant Richie entered the jail in Lynwood, Calif., at 3:15 p.m. for booking, listed at 5′1″ and 105 lbs. She was processed into the system and released at 4:37 p.m., a sheriff’s statement said.

“Miss Richie was cooperative during the process,” the statement said.

The statement said she was released “based on her sentence and federal court guidelines.” Under the current sheriff’s policy, non-violent female offenders sentenced to 30 days or less are booked and released within 12 hours.

Richie was “treated in the same manner as other inmates with a similar sentence,” the statement said.