HAIRDRESSER JUSTICE! It's been over 3 years, but TMZ has learned, the McCourts' former full-time $300-a-day hair cutter has finally gotten his paycheck -- worth $20,900.
TMZ broke the story ... hairdresser Dave Mackey worked on retainer for Frank and Jamie McCourt back in 2008 and 2009 -- and eventually sued the couple last year for failing to pay him for an entire two months.
In the lawsuit, Dave demanded $20,900 for his services -- a bill that went unpaid until this month.
Not surprising it took so long, considering the McCourts were distracted by one of the costliest divorces in California history from 2009-2011.
Nevertheless, it's all over now -- David just filed docs asking to dismiss his lawsuit ASAP ... and according to his lawyer, he was paid in full.