Dissecting the commercial power of KiiiKiii-core on TikTok and Xiaohongshu

Eighteen months after its debut, K-pop girl group KiiiKiii has inspired Gen Z consumers in China with their distinct style, built on dopamine dressing and a deliberately DIY finish. On Xiaohongshu (also known as RedNote), the #kiiikiii topic page shows 365.6 million views. Fans have started calling the group’s look “KiiiKiii core,” and much of the conversation under the tag centers on styling. The look also feeds a wider trend: “electronic Y3K” (#电子y3k), a style topic promoted by Xiaohongshu’s in-house fashion account, according to Miaozhen Systems, has drawn 883.9 million views. For brands, that matters. A look can be sold without the group’s name or faces attached, so a company chasing young consumers in China can design around KiiiKiii’s aesthetic without paying for an endorsement or a licensing deal. What is KiiiKiii core? KiiiKiii core is the opposite of quiet luxury. It pairs DIY craft with the clashing pastels of early-internet graphics, and the imperfections are the point. It takes the glitter of Y2K “McBling” and pushes it toward the futuristic, electronic palette of Y3K. The humor is self-aware, too: the group named its January EP “Delulu Pack,” after internet slang for “delusional.” On Xiaohongshu, fans compare the members to characters from “Aikatsu!,” a Bandai Namco franchise about trainee idols who win auditions with collectible outfit cards. The name matches the mood. KiiiKiii (키키) mimics the sound of giggling in Korean, typed in text messages as “ㅋㅋ,” and doubles as a pun on the English word “key.” Fans go by TiiiKiii, the official fan club name announced in April 2025, which plays on “tiki-taka.” The five members, Jiyu (the leader), Leesol, Sui, Haum and Kya, debuted on March 24, 2025, with the EP “Uncut Gem” under Starship Entertainment, the agency behind IVE. A Gen Z fashion phenomenon Posts on Xiaohongshu break the look down piece by piece, lifting color palettes from the group’s album artwork and copying off-duty outfits, including a bright green Ralph Lauren sweater.. CoolKid, a Xiaohongshu blogger, said the group was “a masterclass in long-term thinking, sharp insight and super systemic IP planning.” Every piece of content, down to the group’s website, carries the same visual idea. Audiences tired of polished visuals want something “dreamy and raw, natural yet rebellious,” CoolKid said. KiiiKiii supplies it by pairing 2000s and 2010s retro with its handmade finish. That do-it-yourself edge is the commercial hook. Because the look prizes imperfection, fans can reproduce it cheaply. Xiaohongshu users post customized caps and other DIY accessories alongside album-inspired photoshoots, each putting their own spin on the group’s look. Everyday pieces and stage costumes share the same playfulness: tops printed with photographs, shoes decorated with 3D sprinkles and cherries, stacked bangles and bright eyeshadow. The props fit too. Members carry a bright pink Motorola flip phone, and a “Candy Pink Magic Hole Flip Phone” has its own stop on the group’s mock tour website. Much of the group’s styling is credited to Gen Z stylists like Okki, who posts on Instagram as @mingky.o3o. She had about 3,000 followers as of this writing and credits collaborators including @paradisessik, @su__ou, and @gaon_4526. Star quality Chart numbers back up the style. “404 (New Era),” the lead single from the January EP, reached No. 1 on Melon’s TOP100 16 days after release, the top spot on South Korea’s largest streaming platform. Its follow-up, “Pop Off Pop Off,” went to No. 1 on YouTube’s worldwide trending music video chart soon after its August 10 release, The Korea Herald said, and the August EP WhyKiiiKiii led iTunes’ K-pop album rankings in France, the Netherlands and Australia while reaching the top 10 in 13 countries. Chinese listeners are streaming the songs on local platforms. After “Delulu Pack” came out, every track on the EP entered QQ Music’s rising-songs chart, and two of them held the top two spots, Starship said. The wider market is growing, too. South Korea’s K-pop album exports to China rose 16.6% to $69.7 million in 2025, putting China back in second place behind Japan for the first time since 2022, Korea Customs Service data showed. China ranked second again in the first half of 2026, behind the US. K-pop’s path into mainland China remains narrow. Large-scale Korean concerts have been effectively absent there since 2016, when Beijing imposed informal limits on Korean entertainment. A look crosses that border more easily than a tour does. A brand can ride the trend with a pastel, glitter-edged capsule or a Y3K-styled beauty line, with no endorsement contract needed. Because fans already customize what they buy, products that leave room for personalization suit a trend built on making things by hand. Starship builds a world around its releases, and the approach would work for any brand with a launch to sell. For the August EP, the label turned the group’s website into a mock travel-booking site for a “WhyKiiiKiii Tour,” complete with tickets, a schedule of six tours each led by a member, joke reviews signed by the members and a “(Girls) Duty Free” shop. The concept also ran across social media and an offline pop-up store, Seoul Edit said. A promotional page becomes something to explore. Though micro-aesthetics burn out fast, and a style tagged “core” can be over by the time a product reaches shelves, this one rests on broader shifts among young consumers in China. Flip phones and other old technology have come back as fashion accessories, and Y3K ranked among the top three style terms on Chinese social media in July 2025, Miaozhen Systems’ data showed. Barely 18 months in, KiiiKiii’s look already works as a brand of its own.

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