BTS has turned 10 and South Korea is ensuring that it celebrates the momentous occasion. Fans of K-pop megastars, known as the ARMY, flocked to hotspots around Seoul on Monday to mark the supergroup's 10th anniversary.

BTS @ 10: South Korea celebrates the band and its music with great aplomb

We often see BTS' fans, who are lovingly called Army, shouting "I purple you" as soon as RM, Jin, Suga, J-Hope, Jimin, V, and Jungkook take over the stage. It's basically fans' way of saying, "I love you," using the K-pop band's signature colour.

'I purple you': Origin story of this popular BTS motto is all things adorable

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BTS @ 10: South Korea celebrates the band and its music with great aplomb

'I purple you': Origin story of this popular BTS motto is all things adorable