"I'm extremely glad this is over," the "Boardwalk Empire" actress said after acknowledging in court that she threatened to hit Samantha Swetra in March at a bar at a chic Manhattan hotel.
De la Huerta pleaded guilty to harassment. Her plea deal calls for a day of community service and 12 weeks of alcohol counseling.
Though the criminal case is coming to a close, de la Huerta still faces a lawsuit from Swetra, a fashion buyer who appeared on the MTV reality series "The City." Swetra's lawyer, Stephanie Ovadia, said she would continue "to pursue the case vigorously."
De la Huerta was accused of punching Swetra in the face, giving her a bloody nose, and tossing a glass that left cuts in Swetra's leg at around 4 a.m. March 20 at the Standard Hotel.
De la Huerta, who plays a lead character's girlfriend in HBO's "Boardwalk Empire," then made some cutting remarks about Swetra to police, according to a criminal complaint.
"I'm a real actress - HBO. She's a publicity-seeker, a fake actress," de la Huerta said, according to the document.
Swetra appeared in several episodes of "The City." The show followed Whitney Port, a star of MTV's Los Angeles-based reality show "The Hills," as she moved to New York to work for designer Diane von Furstenberg.
The Associated Press contributed to this report.