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This week marks 10 years since K-pop sensation BTS burst onto the South Korean music scene in a flurry of chunky chains, baseball caps and spiky hair.

Footage from the group’s official “debut day” in June 2013, when label Big Hit Entertainment unveiled its latest protégés to the world, shows its members flashing their outsize bling to the camera. Marketed as a hip-hop act at the time, the seven-piece then performed in matching black tank tops emblazoned with each wearer’s name for the benefit of an unfamiliar public.

Fast-forward a decade, and BTS’ members are — collectively and individually — among the world’s most bankable fashion icons. In 2021, Louis Vuitton announced the group as brand ambassadors, while lucrative solo deals have seen Suga, Jimin and Jungkook appointed as the faces of Valentino, Dior and Calvin Klein, respectively.

This style evolution has accompanied an overall shift in the group’s image — one that’s seen its members transform from wannabe bad-boys to clean-cut pinups. Gone are the bandanas and beanies, and in their place masses of floppy hair. The questionable fits of earlier years have meanwhile been replaced by sharp tailoring and tasteful color choices.

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BTS poses for photographs just days after the band's official "debut day" in 2013. Scroll through the gallery to see how the K-pop group's style has evolved.
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BTS, then marketed as a hip-hop act, pictured at a photo call for the Incheon Korean Music Wave festival in 2013.
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Early red carpet appearances, such as at the Golden Disk Awards in 2014, often saw the band opting for near-identical suits.
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Another matching ensemble at the Gaon Chart K-pop Awards in Seoul, South Korea in February 2016.
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BTS sport colorful streetwear to perform on "Jimmy Kimmel Live" in November 2017.
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BTS appears at the American Music Awards in 2017, when they became the first Korean group to perform at the annual ceremony.
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The band poses in the press room at the 2017 Billboard Music Awards.
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At the American Music Awards in 2021, BTS performed hit song "Butter" wearing appropriately yellow suits.
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The band perform in complementary outfits for an "MTV Unplugged" performance in 2021.
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BTS attended the 2022 Grammy Awards in Louis Vuitton suits that are being exhibited in Seoul this month to mark the band's anniversary.

Nowhere is this more evident than on the red carpet. Where the group once relied on near-identical suiting (or, conversely, a veritable ragtag of incongruous looks), BTS has slowly mastered the art of complementary — while not matching — ensemble dressing. Look no further than the tonally cohesive Louis Vuitton outfits sported at the 2022 Grammy Awards, or the pleasing pastels worn to announce their partnership with the French label a year earlier.

How much of this makeover can be credited to BTS, rather than the label or management that controls its image, is anyone’s guess. (One of the band’s long-time stylists Lee Ha-jeong has said that RM and V are the most interested in fashion.) The group has also enjoyed the help of fashion’s biggest names, including Saint Laurent’s Anthony Vaccarello, who designed several of their red-carpet ensembles, and Dior’s creative director Kim Jones, who oversaw the outfits for their 2019 world tour.

Regardless, Jin, Suga, J-Hope, RM, Jimin, V and Jungkook are, now, all fashion forces in their own right. And with Western labels vying for a slice of burgeoning South Korean luxury fashion market, the next decade may be even more profitable than the last.

Scroll through the gallery above to see some of BTS’ looks through the years.

CNN’s Candice Zhu contributed to this report.