Bill Blass, long sleeve button-up work cotton Denim(0064) Vintage Back of arms have a little character(look at pic) Bill Blass was an iconic American fashion designer who built his eponymous brand into a lifestyle empire from the 1970s through the 1990s. The brand was known for elegant, classic American sportswear and expanded into various licensed product categories including denim casual wear. Bill Blass denim pieces appeal to vintage fashion enthusiasts and collectors of American designer heritage brands. These items represent accessible luxury from a respected American design house and are valued for their quality construction and timeless styling.