Los Angeles Superior Court Judge Larry Fidler sentenced Rachel Lee on Tuesday. The 21-year-old pleaded no contest last month to one count of felony residential burglary for the February 2009 break-in at Patridge's home in the Hollywood Hills.
She is one of the members of the so-called "Bling Ring," who targeted the homes of celebrities such as Lindsay Lohan, Paris Hilton and others. Four other defendants are awaiting trial.
Lee was accused of taking more than $25,000 in jewellery, designer luggage, and clothing from Patridge's home. A district attorney's statement says a later hearing will determine how much restitution she will have to pay.