It's My Party singer Lesley Gore dead at 68

Singer Lesley Gore circa 1963. Photo / Getty Images

It's My Party hitmaker Lesley Gore has lost her battle with cancer at the age of 68.

The openly-gay singer/songwriter passed away at New York-Presbyterian Hospital, her longtime partner, Lois Sasson, confirms.

Gore was discovered at 16 by producer Quincy Jones and they shot to fame with the chart smash It's My Party.

She continued to find success with tracks like Judy's Turn to Cry, You Don't Own Me, She's a Fool and the Grammy-nominated Sunshine, Lollipops and Rainbows.

Singer Leslie Gore, 2014. Photo / Getty Images

She also penned songs for the movie musical Fame in 1980 and earned an Oscar nomination for Out Here on My Own.

Gore also tried her hand at acting and portrayed Catwoman's sidekick in cult TV series Batman.

Watch Lesley Gore perform It's My Party in 1965:

- WENN