What was under Asa Akira’s kimono as she walked the New York Fashion Week runway?

“Just my body: a bunch of silicone!” joked the adult film actress, director and PornHub brand ambassador, who stormed the catwalk for Berlin-based brand Namilia in a black bodysuit shaped like the traditional Japanese garment.

Well, maybe not so traditional: The sleeves of Asa’s abbreviated robe were emblazoned with the words “C–K WRECKER,” and it was paired with strappy black chaps.

Akira would surely agree with the X-rated description, having starred in more than 500 adult films and made history in 2013 as the second Asian person to win the AVN Female Performer of the Year Award. And despite her hardcore career, she was excited to walk in the mainstream NYFW show.

But Namilia isn’t your grandma’s luxe designer label: It’s a sex-positive brand dedicated to empowering women while challenging stereotypes. Designers Nan Li and Emilia Pfohl unveiled their first collection, “My Pussy, My Choice,” in 2015. Soon, celebs like Jennifer Lopez, Alicia Keys and Cardi B were rocking their risqué pieces, and Paris Hilton walked the runway in lingerie for the brand in 2018.

For their latest line, “Herotica,” the pair teamed with PornHub and booked an all-Asian cast including porn actresses Akira, Jade Kush and Marica Hase.

According to a press release, Herotica is meant to reverse female objectification in a male-dominated world. “This season, it’s about recontextualizing things — porn and fashion — what’s low culture and what’s high culture,” said Li, who freelanced for Kanye West’s brand Yeezy in the past. “We’re doing an all-Asian cast because I feel like in sex and porn Asian culture is so stereotyped, more than other cultures,” added the creative, whose Chinese parents raised him in Germany.

The racy getups sent up pervasive Asian clichés. A classic brocade cheongsam was turned into a sexy takeout box. A dragon applique coiled down the leg of shiny PVC pants.

“Namilia’s message completely aligns with PornHub’s message and my personal message, which is that women can f–k and we are sexual beings,” Akira told The Post backstage, as a stylist slicked back her hair. “I kind of resent when people assume that sex is something that women do for men or give to men.”

The mother of one declared her black outfit “amazing.”

“Honestly, it’s quite ironic because I think I’m in one of the more clothed looks of the show!”