The cast member of MTV's "Jersey Shore" pleaded guilty in January.
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Sorrentino was greeted by his castmates on Friday as he arrived at court.
Sentencing day for Mike 'The Situation' Sorrentino in tax case
Sorrentino's attorney was seeking probation, while the government wanted him to receive a 14-month term.
Sorrentino's brother, Marc, also pleaded guilty and was sentenced to two years in prison.
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Both brothers pleaded guilty in January after being charged in 2014 with multiple tax offenses related to nearly $9 million in income.
Michael Sorrentino appeared on all six seasons of the show that ran from 2009 to 2012 and followed the lives of rowdy housemates in the New Jersey town of Seaside Heights.
He and other cast members reunited this spring for "Jersey Shore Family Vacation."