Korea’s “nation’s Little Sister” Grows Up: Kim You-jung As The New Face Of Outdoor Voices

Fresh off record-breaking ratings for period spy drama 100 Days of Deception, Kim You-jung steps into an unexpected new role global face of a New York athleisure brand proving her range extends well past the sageuk genre that made her famous.

For nearly two decades, Kim You-jung has been reinventing herself in plain sight from child star to “Sageuk Fairy” to romantic lead to, now, international face of American activewear. The latest chapter arrived this week when New York-based premium athleisure label Outdoor Voices unveiled Kim as its newest brand ambassador, paired with a breezy editorial shot against the skyline of Singapore for Dazed magazine’s November issue. It’s a small announcement on paper, but it says a lot about where Kim’s career and K-drama’s crossover appeal currently stands.

From Child Star to “Nation’s First Love”

To understand why a global athleisure brand wants Kim You-jung’s face on its campaign, you have to understand just how long she’s been a fixture of Korean screens. Kim debuted as a child actress in 2003 and, by the time she reached fifth grade, had already appeared in over a dozen dramas and films an almost unheard-of pace that earned her the nickname “Nation’s Little Sister.” She transitioned into prestige period dramas as a teenager with Dong Yi (2010), The Moon Embracing the Sun (2012), and May Queen (2012), roles that cemented a second nickname, the “Sageuk Fairy,” for her comfort in historical settings.

What’s made Kim’s career durable, though, is that she never let herself be boxed into one genre. She pivoted into contemporary romance with Backstreet Rookie (2020), returned to period fantasy with Lovers of the Red Sky (2021), struck a nostalgic chord with Netflix’s 20th Century Girl (2022) a performance that earned her yet another title, “Nation’s First Love” then shifted into supernatural rom-com territory with My Demon (2023–2024) and psychological thriller with Dear X (2025). It’s a filmography built less on chasing trends and more on refusing to repeat herself.

Kim You-jung posing for DAZED / Kim You-jung Instagram

A Spy Drama Breaking Its Own Records

That range is precisely what’s driving her current moment. Kim is currently headlining tvN’s 100 Days of Deception, a 1932-set espionage drama commemorating the network’s 20th anniversary, in which she plays Lee Ga-kyung, Gyeongseong’s most gifted pickpocket, who’s recruited by the independence movement Gugukdan to spend 100 days undercover as an interpreter inside the Japanese colonial government. Opposite her is Park Jin-young (Jinyoung), playing the elite interpreter who may be closing in on her cover.

The drama has become one of the buzziest titles of the fall season, reportedly breaking its own ratings record multiple times and topping the TV-OTT drama buzz rankings for consecutive weeks, with Kim and Jinyoung ranking among the most-talked-about cast members on air. For a period piece with a politically weighty backdrop Japanese colonial rule, the independence movement, a protagonist literally living a double life breaking into wider weekly conversation is no small feat. It’s the kind of role that showcases exactly the “dramatic range” Outdoor Voices cited when explaining why they picked Kim: an actress whose on-screen intensity translates into real cultural pull, which is valuable currency for a brand trying to build global relevance.

Why Outdoor Voices, and Why Now

The brand itself has an interesting backstory that makes this partnership more than a routine celebrity tie-in. Outdoor Voices, founded in 2013 and known for popularizing the “doing things” ethos of exercise-adjacent dressing rather than strict performance gear, closed all of its physical stores in 2024 before being acquired by investment firm Consortium Brand Partners. It’s spent the past two years rebuilding and this month alone, separate from the Kim You-jung news, the brand also announced a UK and EU expansion deal with Focus Brands. Taken together, the moves paint a picture of a company in genuine turnaround mode, looking outward for growth rather than resting on its original American niche-wellness identity.

Choosing Kim as the face of that outward push is a calculated bet. The brand’s statement specifically pointed to her off-screen lifestyle an enthusiasm for exercise and travel as matching its values, not just her star power. It’s a subtler strategy than simply renting a famous face: pairing an actress whose “healthy, refreshing” public image already aligns with the product, rather than asking a celebrity to perform a lifestyle that isn’t genuinely theirs.

Kim You-jung posing for DAZED / Kim You-jung Instagram

The Look Itself

The Dazed editorial leans into exactly that authenticity. Shot around Singapore in a loose, strolling, off-duty concept, Kim moves through the brand’s signature blue classic-logo sweatshirt set paired with a headband for an easy, sporty finish. Elsewhere, she layers a bra top and flared leggings under a lightweight down jacket, and pairs a vest over a charcoal half-zip set a tidy survey of how to layer athleisure for fall and winter without losing the silhouette. It’s not a dramatic reinvention of Kim’s image so much as a confirmation of one she’s cultivated for years: approachable, energetic, unmistakably herself.

What It Means Going Forward

Outdoor Voices is backing the announcement with real retail weight a three-day pop-up at Heiz Exchange in the basement of The Hyundai Seoul from November 6 to 8, stocked with the exact pieces from the campaign, plus a two-week, 10% online discount on Kim’s worn items. For a brand rebuilding its footprint, that’s a meaningful bet on a Korean actress’ pull translating directly into foot traffic and sales and given how 100 Days of Deception has been dominating conversation, the timing looks less like coincidence and more like smart sequencing.

Kim You-jung built her career by never staying still in any one lane for too long. Adding “face of a New York athleisure label” to a résumé that already spans royal courts, colonial-era espionage, and supernatural romance is just the latest proof that she’s still writing her own next chapter.