Lindsay Lohan will get the same treatment as a regular prisoner but there is a chance that she will be released earlier due to overcrowding prison if she will behave well.
Here is the news about the process as written in CNN.COM
Lindsay Lohan will soon be trading in her designer duds for a stiff cotton Los Angeles County Jail jumpsuit come her three-month sentence, likely to be served at the Century Regional Detention Facility in Lynwood, California.
Legal experts say she'll likely serve between two weeks to a month due to the sheriff's long-standing policy of releasing nonviolent offenders early due to overcrowding, presuming she'll also get time off for good behavior. She is due to surrender to the court and begin her sentence on July 20.
Paris Hilton served 23 days of a 45-day sentence at the same jail for violating her probation in a DUI case and was sprung early for good behavior.
"I was basically in the fetal position, basically in hysterics," Hilton told PEOPLE at the time of her first sleepless nights in jail. As for her fellow inmates, she said, "All of the inmates were very supportive. There were girls next to me. We could talk through the vents and they were just really sweet."
As with all other prisoners, Lindsay Lohan, 24, will be photographed, fingerprinted and searched upon entry at the facility, which currently holds about 1,800 inmates, all of them female, says L.A. sheriff's spokesman Steve Whitmore.
After being placed in a holding area with other detainees, Lohan will eventually be assigned a 12-by-8 cell that features two bunks (with 4-inch thick foam mattresses covered in green vinyl), a toilet, sink, a stool and a small tabletop. The only glimpse of the outside world is through a narrow six-inch window.
Whitmore said that Lohan would likely be segregated from the general population "for her protection as well as the jail staff."
Little Free Time
Most inmates at the Lynwood jail are kept in their cells for 22 hours a day, except for one hour of recreation time and 20 minutes per meal. The free-time hour can be spent watching TV in a common room, playing basketball in a recreation room, making phone calls or taking a hot shower.
Morning wake-up calls are at 5 a.m. through a blaring P.A. system. "Line up for chow! Make your bed! Tuck your shirts in! Hands in your pants! I want my military line with no talking! That's how you start your day at Lynwood," a former inmate tells PEOPLE.
Breakfast is served shortly thereafter and typically consists of two hard-boiled eggs, two pieces of wheat bread and an orange juice carton. Lunch is served around 10:30 a.m. and is often peanut butter and jelly sandwiches, an apple, banana or two cookies with a fruit punch carton.
Served around 5:30 p.m., a typical dinner (the only hot meal of the day) is processed chicken, what inmates have nicknamed "erasers," served with noodles, broccoli, coleslaw and Jell-O for dessert. To drink: milk.