Jennifer Lopez and Ben Affleck were all about the Global Citizen Live concert in NYC … and she jumped on stage with a performance that definitely did not disappoint.

The concert was part of a worldwide event, staged in London, Paris, Rio, Lagos, Nigeria and the Big Apple … all to put a spotlight on the hunger epidemic, the climate crisis and COVID vaccines.

Billie Eilish, Coldplay, Lizzo and Paul Simon all performed in New York, but J Lo got the most buzz as she took the stage with LL Cool J and Ja Rule for “All I have” and “I’m Real.” She also sang “If You Had My Love” and “Love Don’t Cost a Thing.”

She also wore a gold-colored Yankees hat … interesting given her breakup with A-Rod.

The concert ran 7 hours and was a big hit … a lot better than the rained-out Central Park concert this past summer, for sure. The skies were kinder on Saturday night.