Patricia Walker sued after unsuccessfully trying to return about $1.4 million worth of jewelry, clothes and other items purchased from an employee she claims was having an affair with her now ex-husband.
Walker's lawsuit claims that the employee - her trusted, longtime personal shopper - received a hefty commission from the sales. It also alleges the store knew about the illicit arrangement but did nothing to stop it.
A Neiman Marcus spokeswoman declined comment Thursday.
Walker's attorney, Mark Ticer, says Walker's husband charged the items to her account without her knowledge.
Walker's ex-husband and the personal shopper did not immediately return calls to The Associated Press.