A dance costume is the clothing worn by a dancer when performing before an audience. A dance costume may be custom designed for use in a specific dance work, or it may have a traditional design, such as those used in some ceremonial and folk dances. Typically, dance costumes are designed to harmonize with the dance and not hinder the movements of the dancer. When created for a specific work, a costume may be designed to expose or enhance the lines formed by the dancer's body, or to express the choreographer's artistic vision, or to engage the audience, or combinations of these. A costume may portray or relate to some characteristic, mood, or theme of the dance. It may fit loosely or it may be form-fitting to emphasize the form of the dancer's body. Costumes are designed in accordance with aesthetic requirements, the anticipated movements of the dancer, and budget. Various people may collaborate in designing a costume, including the choreographer, costume designer, costume maker and dancer.