Costume or fancy dress is the distinctive style of dress of a particular people, class, or period. A costume can be a particular style of clothing worn to portray the wearer as a character or type of character other than their regular persona at a social event such as a masquerade, a fancy dress party or in a theatre performance.
Cosplay, a word of Japanese origin that's short for "costume play", is a performance art in which participants wear costumes and accessories to represent a specific character or idea that is usually always identified with a unique name (as opposed to a generic word). These costume wearers often interact to create a subculture centered on role play, so most time they can be seen in a play group, gathering or convention. A significant amount of these kinds costumes may be originally designed or homemade and unique, depending on the character, idea, or object the costumer wearer is attempting to imitate or represent. The costumes themselves are often artistically judged to how well they represent the subject or object that the costume wearer is attempting to contrive.
Holidays and festivals A traditional, European-style Santa suitThe wearing of costumes has become an important part of such holidays and festivals as Mardi Gras and Halloween (see Halloween costume for more information), and (to a lesser extent) people may also wear costumes in conjunction with other holidays, such as Christmas and Easter. Mardi Gras costumes usually take the form of jesters and other fantasy characters, while Halloween costumes traditionally take the form of supernatural creatures such as ghosts, vampires, pop culture icons and angels. In modern times Halloween costumes sometimes also include fashion show type costumes. Christmas and Easter costumes typically portray mythical characters such as Santa Claus (by donning a santa suit and beard) or the Easter Bunny by putting on an animal costume. Costumes may serve to portray various other characters during secular holidays, such as an Uncle Sam costume worn on the Independence day for example.
In Judaism, a common practice is to dress up on Purim. The Jews celebrate the change of their destiny. They were delivered from being the victims of an evil decree against them and were instead allowed by the King to destroy their enemies. A quote from the Book of Esther, which says: "On the contrary" (hebrew: ונהפוך הוא ) is the reason that wearing a costume has become so popular among the Jews on this holiday.