The phrase refers to the selection and implementation of Halloween costumes designed for a group of three individuals. This often involves coordinating themes or characters to create a unified and visually appealing ensemble. A common example is a group adopting the identities of characters from a well-known movie trilogy, a set of related fairy tale figures, or a comedic trio.
The value of such costuming lies in fostering a sense of camaraderie and shared experience among the participants. It allows for creative expression and can enhance social interactions during Halloween festivities. Historically, group costumes have evolved from simple matching outfits to elaborate and intricately planned presentations, reflecting changing cultural trends and a growing emphasis on visual storytelling.