Western dress codes are dress codes in Western culture about what clothes are worn for what occasion. Classifications are traditionally divided into formal wear, semi-formal wear, and informal wear (undress). The first two are sometimes in turn divided into day and evening wear. In western countries, a "formal" or white tie dress code typically means tailcoats for men and full-length evening dresses with opera-length gloves for women. Anything below this level is referred to as casual wear, although sometimes in combinations such as "smart casual" or "business casual" in order to indicate higher expectation than none at all.
