Singer and actress, Lesley Gore, has passed away. She was 68.

Gore was a pop sensation at the age of 16 after releasing the hit tune “It’s My Party,” in 1963. She went on to record several more successful tracks in her career, including “You Don’t Own Me,” “Judy’s Turn to Cry,” and “Sunshine, Lollipops, and Rainbows.”

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singer Lesley Gore

Gore was also an actress who appeared in two episodes of the Batman television series, “That Darn Catwoman” and “Scat! Darn Catwoman,” as Catwoman’s sidekick, Pussycat. h/t comicbook

Gore died of lung cancer at New York University Langone Medical Center in Manhattan. She is survived by Lois Sasson, her partner of 33 years, as well as her mother and her brother.