"Rock Your Body" singer, Justin Timberlake, was doing just that at 1:30 a.m. Friday at the Seville, John Meadow's new NoMad neighborhood cocktail lounge in New York City.

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According to Page Six's insiders, JT was in the house to check out a set by DJ Chris Liggio, of the band Lipstick Gypsy.

The sources say that the "Can't Stop the Feeling" singer walked through the secret entrance through The James Hotel, and "as soon as he arrived he just started dancing."

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The club spies added that JT was with a small crew of folks, including longtime friend and business manager, Trace Ayala, and that they stayed past 3 a.m., while Liggio spun songs from Timberlake's latest release, "Man of the Woods."

Rocking it in his own clothing brand, also named "Man of the Woods," which now has a SoHo po-up shop, and still beaming from that incredible Super Bowl halftime show, it seems like everything the pop star touches these days turns to gold - including Selfie Kid!