Paris Hilton will serve half of her 45-day jail sentence and will be separated from the other inmates, authorities said.
She will spend just over 20 days in a "special needs housing unit" at the Century Regional Detention Center, Los Angeles County sheriff's spokesman Steve Whitmore said.
Her sentence was shortened after jail officials gave her credit for good behaviour, Whitmore said.
Officials considered several factors in calculating the credit, including that she appeared for her latest court date, he said.
Paris will stay in a unit that contains 12 two-person cells reserved for police officers, public officials, celebrities and other high-profile inmates, he said.
Like everyone else in the 2,200-inmate facility, Hilton will get at least an hour outside her cell each day to shower, watch television, participate in outdoor recreation or talk on the telephone, he added.