The phrase refers to Halloween costumes designed and intended for coordinated wear among a collection of individuals. This implies a thematic consistency across multiple outfits, creating a unified visual representation. Examples include ensembles based on characters from a movie franchise, variations on a central profession like different types of doctors, or adaptations of iconic artworks.
The value of such coordinated costuming lies in enhancing social engagement and fostering a sense of collective identity. It can elevate participation in Halloween events, creating memorable experiences and photo opportunities. Historically, coordinated attire has signified group affiliation and identity across various cultures and time periods, thus adding a layer of historical significance to the current application.