Richie OK after 82 grueling minutes.

"I'm pregnant." That makes 2 short sentences.

Nicole Richie was released from jail Thursday, just 82 minutes after the pregnant TV reality star checked in for a four day sentence for driving under the influence of drugs.

The reality show star, who checked into jail in this Los Angeles suburb at 3:15 p.m., was released at 4:37 p.m. "based on her sentence and federal guidelines," Los Angeles County Sheriff's Deputy Maribel Rizo said without elaborating.

Under a federal court mandate to manage jail overcrowding, arrestees sentenced to 30 days or less for a nonviolent offense are usually released within 12 hours, the sheriff's department said in a statement.

Under the guidelines, Richie was "treated in the same manner as other inmates with a similar sentence," the statement said.

The 25-year-old was originally sentenced to 96 hours in jail, but that was reduced to 90 hours and then 90 minutes, of which she served a brutal 82.