Jennifer Lopez I Humped A Lion For My 45th Birthday!

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Jennifer Lopez celebrated her 45th birthday with an almost life-sized cake of her riding a lion ... and a bash that cost $100K!

J.Lo threw the party for herself at Nammos restaurant in Southampton.

A hundred guests sang happy birthday, including Khloe Kardashian, French Montana, Fat Joe, Kelly Ripa, Leah Remini, Andy Cohen and ... Maksim, who showed up at 1 AM.

There was a fancy, sit down dinner followed by dancing.

The party ended at around 4 AM.