[attach id=405349 size="medium"]Lesley Gore in the role of Pussycat, an associate of Catwoman, in the 1960s TV series Batman.[/attach]

Singer-songwriter Lesley Gore, who shot to stardom as a New Jersey teenager with the 1960s pop hit It’s My Party and co-wrote music for the 1980 film Fame, died in New York, a long-time associate confirmed. She was 68.

Gore, who died at a New York hospital, had cancer, said Blake Morgan, chief executive officer of ECR Music Group, who produced Gore’s 2005 album Ever Since.

“Everyone here is very sad today but also very proud of our work with her and this record,” said Morgan. “It is bold and courageous and beautiful, just like her.”

Gore broke into the music scene in 1963 with It’s My Party, which hit number one on the record charts and sold more than one million copies.

She followed that with such hits as Judy’s Turn to Cry, That’s the Way Boys Are and You Don’t Own Me, which became a feminist anthem.

Gore also performed as a sidekick to Catwoman on the 1960s Batman TV series starring Adam West.

Gore co-wrote the Academy Award-nominated song Out Here on My Own with her brother Michael Gore for Fame.

Besides her mother and brother, Lesley Gore is survived by her partner of more than three decades, Lois Sasson, Morgan said.