According to TMZ, the star-studded bash cost six figures and featured a dinner followed by dancing.
The guest list included Fat Joe, French Montana and his girlfriend Khloe Kardashian, Scott Disick, Kelly Ripa, J.Lo’s BFF Leah Remini, and her rumored new beau Maksim Chmerkovskiy.
Following a speech from her manager Benny Medina, J.Lo was presented with a life-sized cake of her riding a lion.
“Let the games begin! #itsmyparty #funtimes #birthdaygirl #aintnuthingbutanumber,” she tweeted.
Everyone from Mac Miller to her ex Casper Smart wished her. “Happppppppy Birthday to the most Beautiful lil bear in the world!!!! May all your wishes come true!!” wrote Smart.
Check out more pics from J.Lo’s big birthday bash.