The article discusses how national flags are used in modern fashion design, focusing on the American flag, British Union Jack, and flags of France, Korea, Israel, Germany, and Argentina. Different methods of incorporating flags into fashion were explored, such as using traditional flags, parts of flags, or completely redesigned versions. The study found that flags were used to emphasize a country's image through shapes and colors, either subtly or playfully. The research aimed to contribute to Korea's unique fashion identity by creatively incorporating the Taegeukgi flag.