Sequins are small flat spangles with a hole in the middle, sewn onto fabric in a solid or patterned layer, making a piece shine and shimmer. Each sequin reflects light, so a piece covered with them literally glitters in movement and under lighting — which is why sequins are inseparable from evening, festive and stage dress, and especially the disco aesthetic. Historically spangles were sewn onto costumes even in antiquity as a sign of luxury and wealth. Sequins can be matte, holographic or two-sided (changing colour when 'stroked'). It is a detail of pure celebration and glamour: it instantly turns a plain piece into a striking, light-catching look.
