Lindsay Lohan's attorney said she was quitting after the actress was sentenced to jail time.
The actress's attorney, Shawn Chapman Holley, resigned from the case shortly after releasing a statement yesterday calling a judge's 90-day jail sentence for Lohan "harsh and unfair".
No reason for her withdrawal from the high-profile case was given, and her replacement has not been announced.
A representative for the seasoned defence attorney, said her earlier remarks about Lohan's sentence remained valid.
"Ms Lohan and I are extremely disappointed in the sentence handed down by Judge [Marsha] Revel," Holley's statement had read. "We believe that the penalty is far harsher than what others would have received under similar circumstances.
"The reality is that Ms Lohan, like most defendants, had to balance work commitments with court requirements.
"To be punished so severely for doing so, particularly in light of the fact that she substantially complied with each of her probationary conditions, is harsh and unfair," it said.
Holley said Lohan would serve her sentence, which because of overcrowding and budget cuts is likely to be much shorter than the three months ordered by the judge.
The attorney also said the 24-year-old actress would comply with the other terms of her sentence, which include a three-month stay in rehab and reporting to a probation officer for drug and alcohol testing.
Judge Revel determined that Lohan violated her probation on a 2007 drug and drunk-driving case by missing seven alcohol education classes since December, when the judge ordered her to attend weekly sessions.
Holley first appeared in court in March 2009 when the actress got in trouble with her former alcohol education programme. The judge reinstated Lohan's probation after Holley cleared up what she called a misunderstanding.
The attorney, who was a member of OJ Simpson's famed defence team, kept Lohan out of trouble, even after her alcohol-education programme reported problems with the star last year.
On Tuesday, Holley placed her arm around Lohan as the actress burst into tears.