The "Gucci boy" of BTS is Kim Taehyung, also known as V.
Kim Taehyung earned this nickname due to his well-known affinity for and frequent wearing of Gucci clothing and accessories. His style often incorporates pieces from the luxury brand, and he has become synonymous with Gucci in the eyes of many fans. This association isn't just about wearing the brand; it's also about how he effortlessly embodies the brand's aesthetic.
It's important to note that while Taehyung is known as the "Gucci boy," other members of BTS also wear and appreciate luxury brands. However, Taehyung's connection with Gucci is particularly prominent and well-recognized.