Western dress codes are a set of dress codes detailing what clothes are worn for what occasion. Conversely, since most cultures have intuitively applied some level equivalent to the more formal Western dress code traditions, these dress codes are simply a versatile framework, open to amalgamation of international and local customs. This versatility has made this scale of formality a practical international formality scale. Classifications are divided into formal wear (''full dress''), semi-formal wear (''half dress''), and informal wear (''undress''). Anything below this level is referred to as

casual wear Casual wear (or casual attire or clothing) is a Western dress code that is relaxed, occasional, spontaneous and suited for everyday use. Casual wear became popular in the Western world following the counterculture of the 1960s. When emphasisi ...

, although sometimes in combinations such as " smart casual" or " business casual" in order to indicate higher expectation than none at all.

Etiquette

For both men and women, hats corresponding to the various levels of formality exist. As supplements to the standard dress codes

headgear Headgear, headwear, or headdress is the name given to any element of clothing which is worn on one's head, including hats, helmets, turbans and many other types. Headgear is worn for many purposes, including protection against the elements, de ...

(''see

biretta The biretta ( la, biretum, birretum) is a square cap with three or four peaks or horns, sometimes surmounted by a tuft. Traditionally the three-peaked biretta is worn by Catholic clergy and some Anglican and Lutheran clergy. A four-peaked bire ...

kippah A , , or , plural ), also called ''yarmulke'' (, ; yi, יאַרמלקע, link=no, , german: Jarmulke, pl, Jarmułka or ''koppel'' ( yi, קאפל ) is a brimless cap, usually made of cloth, traditionally worn by Jewish males to fulfill the c ...

etc.'') can be worn. Ceremonial dress, military uniform, religious clothing,

academic dress Academic dress is a traditional form of clothing for academic settings, mainly tertiary (and sometimes secondary) education, worn mainly by those who have obtained a university degree (or similar), or hold a status that entitles them to assum ...

, and folk costume appropriate to the formality level are encouraged.

Formal wear

Typical events: Weddings, state dinners and affairs, formal balls, royal events, etc.

Semi-formal wear

Typical events: Theatre opening nights, charity balls, etc. There is some variation in style depending on whether it is summer or winter. See

black tie Black tie is a semi-formal Western dress code for evening events, originating in British and American conventions for attire in the 19th century. In British English, the dress code is often referred to synecdochically by its principal element fo ...

and

stroller Various methods of transporting children have been used in different cultures and times. These methods include baby carriages (prams in British English), infant car seats, portable bassinets (carrycots), strollers (pushchairs), slings, backpacks ...

for more details.

Informal wear

Typical events: Diplomatic and business meetings, many social occasions, everyday wear

Casual wear

Casual wear encompasses business casual, smart casual, etc.

History

The background of traditional contemporary Western dress codes as fixed in 20th century relied on several steps of replacement of preexisting formal wear, while in turn increasing the formality levels of the previously less formal alternatives. Thus was the case with the ceasing of the

justacorps A justacorps or justaucorps () is a knee-length coat worn by men in the latter half of the 17th century and throughout the 18th century. The garment is of French origin, and was introduced in England as a component of a three-piece ensemble, which ...

, extensively worn from the 1660s until the 1790s, followed by the same fate of the 18th century frock (not to be confused with frock ''coat''), in turn followed by the frock coat.

Full dress, half dress, and undress

Formal, semi-formal, and informal all have roots in 19th century customs subsequent to the replacement of the 18th century generic justaucorps, and has remained fixed defined since the 20th century. The 19th century frock coat rarely occurs except as formal alternative. For women, interpretations have fluctuated more dynamically according to

fashion Fashion is a form of self-expression and autonomy at a particular period and place and in a specific context, of clothing, footwear, lifestyle, accessories, makeup, hairstyle, and body posture. The term implies a look defined by the fashion in ...

. Before the modern system of ''formal'', ''semi-formal'', and ''informal'' was consolidated in the 20th century, the terms were looser. In the 19th century, during the

Victorian Victorian or Victorians may refer to: 19th century * Victorian era, British history during Queen Victoria's 19th-century reign ** Victorian architecture ** Victorian house ** Victorian decorative arts ** Victorian fashion ** Victorian literature ...

and Edwardian periods, the principal classifications of clothing were ''full dress'' and ''undress'', and, less commonly the intermediate ''half dress''. ''Full dress'' covered the most formal option: frock coat for day wear, and dress coat ( white tie) for evening wear (sometimes with supplementary alternative being a full dress uniform independent of what time of the day). As such, ''full dress'' may still appear in use designating formal wear. When morning dress became common (in the modern sense, using a morning tailcoat rather than a frock coat), it was considered less formal than a frock coat, and even when the frock coat was increasingly phased out, morning dress never achieved full dress status. Therefore, in the 21st century, ''full dress'' often refers to white tie only. Today's semi-formal evening black tie (originally ''dinner clothes'') was initially described as informal wear, while the "lounge suit," now standard business wear, was originally considered (as its name suggests)

. ''Half dress'', when used, was variously applied at different times, but was used to cover modern morning dress (the term ''morning dress'' is fairly undescriptive and has not always meant modern morning dress). ''Undress'' (not to be confused with naked) in turn was similarly loose in meaning, corresponding to anything from a dressing gown to a

lounge suit A suit, lounge suit, or business suit is a set of clothes comprising a suit jacket and trousers of identical textiles worn with a collared dress shirt, necktie, and dress shoes. A skirt suit is similar, but with a matching skirt instead of tr ...

or its evening equivalent of dinner clothes (now one of the more formal dress codes seen in many Western regions).