Formal and Party Dresses For Girls | Party Dresses 2011 | Party Wear Collection by RBFormal wear (US, Canada) and formal dress (UK, Australia, New Zealand, and other Commonwealth Realms) are the general terms for clothing suitable for formal social events, such as a wedding, formal garden party or dinner, débutante cotillion, dance, or race. The Western style of formal evening dress, characterized by black and white garments, has spread through many countries; it is almost always the standard formal social dress in countries without a formal national costume.A dress code is a set of rules governing a certain combination of clothing; some examples are black tie and morning dress. Formal dress is the grouping of all the dress codes which govern clothes worn to formal events. The traditional rules that govern men's formal dress are strictly observed[by whom? from these derive the evening dress variants worn on many occasions, such as high school prom dances, formal dances, and entertainment industry award programs.