The history of fashion in the United States is extensive, and the styles and trends that have developed over time to represent the nation's multiculturalism as well as its dynamic social and economic environment.

The development of the "little black dress" by fashion designer Coco Chanel in the 1920s is one of the most famous fashion events in American history. Women still wear this classic item of apparel, which transformed how they thought about fashion and affected how they dressed.

The counterculture movement of the 1960s and 1970s, which sparked a new wave of self-expression and stylistic experimentation, had a significant impact on American fashion as well. This resulted in the introduction of popular styles like bell-bottom pants and tie-dye shirts as well as the creation of new fashion idols like Twiggy. 

Designer labels like Ralph Lauren and Calvin Klein gained popularity in the 1980s and 1990s, and luxury clothing companies like Gucci and Prada also started to emerge during this time. During this time, "streetwear" fashion also began to take off, and young people started to take a shine to companies like Nike and Adidas.

Fashion in America today is a mash-up of several trends, with businesses and designers from around the globe having an impact on what people wear. The diverse makeup of the nation is reflected in the current fashions and trends, which range from the hip streetwear of New York City to the carefree beach styles of California.

The lack of diversity and inclusivity in the American fashion business has drawn criticism in recent years. A increasing number of fashion designers and companies are attempting to change this by including more plus-size models, LGBTQ+ individuals, and people of colour in their ad campaigns and on the runway.

The diversified culture and dynamic social and economic environment of the United States are reflected in the country's fashion industry as a whole. American design has evolved and inspired individuals all around the world, from the classic "little black dress" to the recent streetwear craze.