Dupre made news in March when she was identified as a high-priced call girl in the Emperors Club VIP prostitution ring whose client list included Spitzer, who resigned soon after the scandal broke.
A federal lawsuit filed this month by Amber Arpaio, alleged owner of the lost driver's license, seeks unspecified monetary compensation for defamation and invasion of privacy.
Dupre has said she was only 17 when she signed a contract to appear in the "Girls Gone Wild" video.
The video displays a New Jersey driver's license in the name of Amber Arpaio and a birth date that would have made her appear to be in her 20s.
Arpaio, 26, cannot recall where she lost the license and doesn't know Dupre, although the women have similar faces, said Arpaio's lawyer, Joseph J. Fell.
"Somehow, Ashley Dupre got ahold of the license and had it for some period of time," Fell said Thursday.
Arpaio also sued "Girls Gone Wild" founder Joseph Francis.
Lawyers for Francis and Dupre had no immediate comment. Dupre's publicist did not immediately return a call seeking comment.
Earlier this month, Dupre dropped her own lawsuit against Francis. She had previously claimed her name and image were exploited.
The lawsuit by Arpaio was filed in U.S. District Court in Trenton on July 11 and reported Thursday in The Star-Ledger of Newark.
