This style is most often on seen on formalwear, such as a dinner jacket. This style is most often on seen on formal wear, such as a dinner jacket. The smoking jacket then evolved into the dinner jacket. A notched lapel is not always considered to be appropriate for a dinner jacket. He accepted his Oscar while wearing a dinner jacket over jeans and cowboy boots. Men with diplomas or certificates wear a dark suit instead of a dinner jacket. He wore a dinner jacket and tie when he presented. The dinner jacket was worn with a white shirt and a dark tie. Falco is shown in a 20th-century-style dinner jacket, walking past people in eighteenth-century formal wear. In mid-decade, the dinner jacket or tuxedo, was used in more relaxed formal occasions. SS mess dress resembled a double-breasted dinner jacket, with collar tabs and white piping.