Lauryn Hill begins her prison sentence

Four months after she was sentenced to 3 months in Federal prison for tax evasion, Grammy award winning singer Lauryn Hill has turned herself in...

From TMZ 

Ready or not ... Lauryn Hill has just reported to federal prison in Connecticut, where she will begin her 3 month sentence for tax evasion, TMZ has learned. 

Officials tell TMZ ... the former Fugees singer was booked into the Federal Correctional Institution in Danbury at 11:15 AM EST. 

We're told the FCI is a "minimum security type facility" where inmates live in "barracks type" housing.

We're also told 38-year-old Hill will not be isolated in the facility -- and will be housed with the general population. 

As we previously reported, Hill pled guilty last year to three counts of tax evasion for failing to file returns on $1.8 million she earned from 2005 to 2007.