The phrase refers to attire designed for celebratory autumn festivities, specifically resembling characters named Branch and Poppy. These outfits often involve brightly colored wigs, themed clothing, and character-specific accessories that visually represent the individuals they are imitating. Examples would include vibrant blue hair and a grumpy expression for one, and shock pink hair and a cheerful disposition for the other.
Such thematic apparel enables participation in imaginative play and communal activities during seasonal celebrations. Replicating fictional character appearance fosters engagement with familiar narratives. The selection of these characters suggests a popularity and cultural relevance within contemporary entertainment. These costumes provide a tangible connection to beloved media, allowing wearers to express personal affinity.