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Leonardo DiCaprio

Johnny Nunez/WireImage

Is Leonardo DiCaprio the next...Michael Jackson?!

The grizzly-faced Great Gatsby star and his girlfriend, Erin Heatherton, hit singer Gary Clark Jr.'s showcase last night at the Darby in NYC with his mom, Irmelin.

The lovebirds were spotted dancing up a storm into the wee hours of the morning.

And the King of the World proved he can move like the King of Pop...

DiCaprio, 37, and Heatherton, 23, stayed after most of the place cleared out to do some dancing. "When a Michael Jackson song came on, he was tipping his hat like MJ did," an eyewitness tells us, adding that he also did some of Jackson's fancy signature footwork.

"He was also twirling Erin around," the source said. "They were getting down!"

While there was no moonwalking, the two did pack on the love.

"They were drinking beer and making out on the dance floor," the source said.

They left just before 1 am.

Zoe Saldana, Pharrell, Estelle, Maxwell and Swizz Beatz were also at the show, which was sponsored by Puma and Grey Goose.