NYC- A “Lipstick Bandit” menaced female workers in a city welfare office – chasing them around desks, smearing red lipstick on their cheeks and even pulling down a woman’s blouse to expose her breasts, a federal lawsuit charges.

The scandalous accusations leveled yesterday by three female workers from a Bronx office of the Human Resources Administration cast supervisor Serena Reaves-Cain as a pervert who constantly harassed her same-sex underlings.

“Cain hugged the plaintiffs and pushed her breasts up against their breasts and used the palm of her hand to spank them on the buttocks,” the lawsuit claims.

Welfare worker Anitra Kincy says Reaves-Cain approached her last April and planted two kisses on her cheek, leaving behind a pair of lipstick marks.

“From that day employees called Cain the ‘Lipstick Bandit,'” the lawsuit says.

Reaves-Cain allegedly pulled down the blouse of another worker, Clara Luz Badia, to expose Badia’s breasts last year in a bizarre attempt to prove Badia could pose for a pinup calendar.

Reaves-Cain had proposed creating a calendar of scantily clad women as a way to raise money for an employee fund-raiser, the lawsuit says.

“All Badia would have to do is show some t—ies,” Reaves-Cain allegedly said.

But the women told Reaves-Cain “they were not interested in selling themselves,” according to the lawsuit filed in Manhattan Federal Court.

Reaves-Cain could not be reached yesterday, and city attorneys declined to comment on the allegations.

“We have just received the legal papers and will be reviewing them thoroughly,” said Georgia Pestana, the head of the city Law Department’s Labor and Law Employment Division.

The welfare employees, who are seeking unspecified damages, field welfare requests at an office on E. 161st St. They said their complaints about Reaves-Cain went unheeded by superiors until they filed a formal complaint in April 2006.

An internal review concluded Reaves-Cain had “behaved inappropriately,” according to the workers’ attorney Ivan Smith. He said the women are still employed at the same office but no longer work on the same floor as Reaves-Cain.

The women said the troubles began after Reaves-Cain was assigned to the 21-person office as site manager in November 2005.

Reaves-Cain allegedly threw herself on top of Constance Trotman last April while the woman was sitting in her chair.

“Trotman jumped up out of the chair and Cain almost fell to the ground,” the lawsuit claims.

Reaves-Cain encouraged Trotman to “come to Mama” and grabbed her in a bear hug, according to the lawsuit.

Kincy also says Reaves-Cain smacked her on the buttocks several times in March 2006 and told her, “God don’t like ugly, but he’s not too fond of pretty, either.”