December 24, 2014 02:30 PM

It’s a very Merry Christmas for One Direction fans as an uninhibited Niall Horan stepped out Tuesday in his skivvies and nothing else to show off his playful side (and his fit physique) a little holiday happy dance.

His boxer-brief boogie was captured during NBC’s airing of One Direction: The TV Special, which opened the doors for a behind-the-scenes look at the Brit boy band.

And Vine clips of the Ireland native, 21, enjoying a bit of harmonizing in his undies are starting fires all over social media.

“Niall James Horan singing Steal My Girl and dancing in his underwear gives me life,” Tweeted one appreciative fan.

Added another besotted Niall lover: “I almost died when you were jumping around in your underwear on my television.”

The band, which made Forbes magazine’s highest-paid musicians list for 2014, appeared on their first U.S. television special Tuesday, just three days after making a third appearance on Saturday Night Live as musical guests.

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