Fashion in the United States is eclectic and predominantly informal. While Americans' diverse cultural roots are reflected in their clothing, particularly those of recent immigrants, cowboy hats and boots and leather motorcycle jackets are emblematic of specifically American styles.
Blue jeans were popularized as work clothes in the 1850s by merchant Levi Strauss, a German-Jewish immigrant in San Francisco, and adopted by many American teenagers a century later. They are worn in every state by people of all ages and social classes. Along with mass-marketed informal wear in general, blue jeans are arguably one of US culture's primary contributions to global fashion.[41]
Though informal dress is more common, certain professionals, such as bankers and lawyers, traditionally dress formally for work, and some occasions, such as weddings, funerals, dances, and some parties, typically call for formal wear.