Street style is a dynamic form of fashion that originates from everyday people in urban centers, rather than from design studios. It champions individualism, allowing wearers to express diverse identities and profoundly influence mainstream trends. Renowned photographer Bill Cunningham famously described the streets as "the best fashion show," capturing candid looks that became a viral and instant facet of the industry.

While always present, street style evolved into a significant 20th-century phenomenon following World War II, especially with the rise of the "teenager" and the baby boomer generation seeking identity amidst increasing standardization. It became a powerful tool for group cohesion, with various subcultures—like the 1950s teddy boys, 1960s mods, and 1980s punks and goths—using distinctive dress and body decoration to forge a strong sense of identity. This organic approach to fashion continues to challenge and inform how style is both created and consumed.