Lohan's Lawyer -- Dr. Murray Does NOT Deserve 4 Years in Prison

Lindsay Lohan's lawyer is coming to the defense of Conrad Murray ... claiming the Doc should NOT get the maximum sentence for manslaughtering Michael Jackson ... because it just wouldn't be fair.

With Murray's sentencing hearing set for tomorrow in L.A. -- we asked the effervescent Shawn Holley if Conrad deserves the 4 year prison sentence he's expected to receive.

Holley makes it clear she doesn't excuse Murray's "horrible" crime ... but claims he shouldn't get the full sentence because, "He has no record."