Shawn Holley to Lindsay Lohan: I'm Done With You!

Shawn Holley is saying goodbye to Lindsay Lohan for good, even though Lindsay has begged her to come back on board as her lawyer ... TMZ has learned.

Sources connected with the case tell us ... Holley is in the process of filling out paperwork and getting the necessary signatures to officially withdraw from the case ... before Lindsay's hearing on January 30.

TMZ broke the story ... Lindsay fired Holley last week as she was on her way to the courthouse to discuss plea bargaining her lying-to-cops case. Lindsay hired Mark Heller, a New York lawyer who is not licensed to practice in California.

Sources close to Lindsay tell TMZ ... Lindsay has told Holley she made a mistake firing her and wants her back, but Holley has had it with Lohan -- who still owes her a ton of money.