The tech world's favorite playboy may have run a nightclub out of his off-campus frat house in college, but these days you're more likely to find workaholic Elon Musk socializing on Twitter between marathon shifts at the Tesla factory or SpaceX offices. When the CEO does find time to let loose, as the New York Times recently reported, he's rubbing elbows with fellow billionaires and A-listers at events a bit more exclusive than a college rager. Wondering where you're most likely to party with the richest man in the world? Click through for a rundown.

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