Moncler's floor-length puffer coats are selling out

Moncler is getting the last laugh with their crazy long puffer coats. (Moncler)

Moncler is getting the last laugh. Remember when you were a kid and wore your sleeping bag around the house like a designer gown?

Well, the Italian megahouse Moncler was feeling the slumber party nostalgia when it teamed up with Valentino’s creative director Pierpaolo Piccioli to transform their famous puffer coats into ski-like evening gowns that cover every inch of the human body.

The sculptural creations were first introduced in February during Milan fashion week at the launch of Moncler’s Genius Project, a collaboration extravaganza with a slew of splashy designers.

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Of course, some blogosphere haters tried to poke fun with some “trash bag” trash talk.

Turns out the joke was on them.

By November, actor and style-star-on-the-rise Ezra Miller was making red carpet headlines in a Moncler 1 Pierpaolo Piccioli outfit, which featured a bold black gown with matching hood and gloves, at the Paris premiere of “Fantastic Beasts: The Crimes of Grindelwald.”

Sultry songstress Rita Ora rocked a similar Moncler knee-length style (a collab with designer Simone Rocha) to Macy’s Thanksgiving Day Parade a few weeks later.

Soon after, puffer-loving fans snapped up these high-fashion bundles of joy — selling out both styles on Moncler’s e-store.

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Yes, it looks like these limited-edition designs are becoming collectors’ items.

Luckily, Barneys New York is still offering full-length blue and pink versions, including the long dress ($2,700) and a cocoon-like winter cape ($3,565), if you’re into the whole straitjacket-chic look (who isn’t?) or simply seeking a solution for battling the brisk temps, sleet and snow ahead.

Get down from head to toe!

This story originally appeared in the New York Post.