What celebs wear is only half the Met Gala game, the other half is how they party -- and Alicia Keys' post-gala event had plenty of that ... with the biggest names.
The singer threw a bash at Casa Cipriano in lower Manhattan late Thursday night, and along with performing ... she played host to the likes of Michael Jordan ... who's still so damn popular, he seemed cornered by crowds at times.
Leonardo DiCaprio was in attendance in his going-out baseball cap, and Elon Musk was rocking a white suit to stand out even more.