The charges stemmed from a July car chase and an arrest in May after she wrecked her car in Beverly Hills. After her July arrest, the star of the hit movie "Freaky Friday" checked into a rehabilitation center in Utah and spent more than two months there. It was Lohan's second stint in rehab this year after admitting she had been attending meetings of Alcoholics Anonymous.

Lohan was also sentenced to 10 days of community service, three years probation and 18 months of an alcohol-education program. Jail sentences for minor crimes are often cut short by Los Angeles sheriffs, who manage the county jails, because of overcrowding. In August actress Nicole Richie of "The Simple Life" spent one hour, 20 minutes in jail for what was a four-day sentence for driving under the influence of drugs.