In May, BTS — the K-pop band that has taken the international music industry by storm — made major waves and surprised fans by taking home a big win as the best social group during the Billboard Music Awards. While their popularity is certainly attributed to their music, there’s something else these talented guys have to offer: style. From dapper looks to matching jumpsuits, the band — made up of Jungkook, Suga, Jin, Rapmon, Jimin, J-Hope, and V — is well known for their eclectic, fashion-forward outfits on the red carpet, on social media, and beyond. Now they are celebrating their four-year anniversary together as a band and, of course, they're doing it in the most fashionable way possible. As part of the celebration, they took to a live stream to host a pajama party complete with matching light pink pajamas, white sneakers, polka-dot scarves, and a pink cake. To commemorate their anniversary, click ahead to see some of their best style moments so far.