快時尚指仿照高端時尚品牌最新的款式，以低成本、快速生產的模式制造出來的服裝產品。
"Unlike conventional clothing companies where designers plan their new lines every season, fast fashion retailers design, manufacture, and release new products ad hoc, whenever new trends appear," explains a report on fast fashion funded by the Samsung Economic Research Institute.
由三星經濟研究院資助的一項有關快時尚的研究報告指出：“傳統服裝公司設計師會為每一季設計新的款式，快時尚商家則不同，他們隨時都在設計、加工并發布新產品，只要有新的流行趨勢出現。”
