The “Kardashians” star spilled on the secrets behind her Met Gala 2024 red carpet look in a behind-the-scenes video for Vogue on Tuesday, with the 43-year-old pursing her lips and struggling to breathe as she gets her hair done at the beginning of the clip.

8Kim Kardashian had to practice breathing in her insanely tight corset before stepping out at the 2024 Met Gala.VogueKim Kardashian whittles her waist to extreme size on Met Gala 2024 red carpet0 seconds of 36 seconds

8The star wowed in an open metalwork skirt and silver brocade corset.AFP via Getty Images

8Kim’s silver corset whittled her waist to an insanely small size.GC Images

“How’s your breathing? How’s it going” a voice asks off-camera before Kardashian replies, “It’s … it’s an art form. But I got it.”

The Skims founder explained that she was doing a “trial day” two days ahead of the Met Gala to test her beauty look and practice wearing her silver Maison Margiela corset and metal skirt.

“This is actually the first time I’ve ever done this,” the 11-time Met Gala attendee shared, comparing her glam session to people “testing their wedding makeup.”

“Never done that either,” she said with a wink to the camera.

8She was surrounded by white-coated team members who put the finishing touches on her metal skirt.Vogue

8The reality star covered up with a fuzzy gray cardigan.

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Explaining that John Galliano’s designs have been on her “mood board for years,” the Skkn by Kim founder shared that it had taken her years to get the current Maison Margiela creative director to agree to dress her for the Met Gala.

“To put it lightly, that is about four or five years of me stalking him to try to see if he would ever design a look for me for the Met,” she admitted.

As for the look, Kardashian said that when she heard about the 2024 theme, “Sleeping Beauties: Reawakening Fashion,” she imagined “having the best night of your entire life with your most magical person and you just are in a garden.”

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After waking up from the incredible evening, the star said she’d pictured taking “her boyfriend’s sweater, to like, run off to make it where I have to be.”

While plenty of social media users were confused about her wearing a pilled cardigan on the Met Gala red carpet, they also had plenty to say about her corset, with some claiming she was “crushing her organs.”

8Her skirt featured metal flowers and leaves.Getty Images

8Kardashian said she loved how the corset made her feel “snatched.”Vogue

This isn’t the first time the TV star has come under fire for an extreme waist-cinching look; she admitted to taking “corset breathing lessons” to wear her 2019 Thierry Mugler Met Gala dress and also received similar backlash when she rocked another waist-obliterating Mugler corset earlier this year.

Along with struggling to breathe, Kim’s custom outfit posed another challenge.

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Because of the intricate detail on her skirt, the mom of four — who revealed that her 10-year-old daughter, North West, would choose her Marilyn dress if the tween could pick anything from her mom’s closet — had to wear a pair of clear platform shoes with no heel so they wouldn’t “get stuck in the metal.”

“To wear these, you’re on your tiptoes and you’re balancing the whole time flexing your calf muscles,” she explained before taking tiny steps around the room.

“This is our only practice, but we’ll do it,” she said.

Spoken like a true Met queen.