The bizarre saga of a former reality TV star who was recently charged with drug possession and prostitution continues today, when the Williamsville woman will plead not guilty to the charges.

Alicia Guastaferro, who gained notoriety as a spoiled teen on the ABC show “Wife Swap,” will enter the plea in Pembroke Town Court, according to her lawyer, Daniel M. Killelea.

Guastaferro was arrested at the Pembroke travel plaza along the Thruway in August. State troopers investigating a complaint of erratic driving reported finding her and a Rochester attorney “slumped over” and apparently passed out in a car whose engine was running.

The woman, now 21, told troopers that she had met attorney James D. Doyle while bartending in Niagara Falls two years earlier and that he paid her $500 to $700 twice a month to spend the night with him and have sex, according to court documents. The drug charges involve prescription medication in her purse.

A trooper dispatched to the area in August said he found a car that was “improperly parked” in the Pembroke service area. The engine was running, the lights were on, and the driver, identified as Doyle, 54, was slumped over the steering wheel.

The trooper said that Doyle’s speech was slurred, he had “watery/bloodshot eyes,” and there was a strong odor of alcohol on his breath. When he refused a breath test, the trooper said, Doyle was arrested on a misdemeanor count of driving while intoxicated and various traffic violations.

Guastaferro’s appearance on a 2008 episode of “Wife Swap,” recorded when she was 15, made her a target of ridicule at school and sent her into psychiatric care for post-traumatic stress disorder, depression, an eating disorder and panic attacks, she said in a lawsuit she filed in 2010 seeking $100 million in damages from ABC and its parent, the Walt Disney Co.

The suit was settled last year, and the terms were not disclosed. Last year, while Guastaferro was working as a dancer at a strip club, her parents were sentenced in federal court after pleading guilty to criminal charges of money laundering and tax evasion.

News Staff Reporter Charlie Specht and the Associated Press contributed to this report.