Dive into fantasy with our Mermaid Dog Costume, a show-stopping outfit that adds sparkle to your pup’s Halloween ensemble. Made with shiny lurex and high-sheen fabrics, this costume glistens under the light and captures the magical essence of the sea. With a detailed tail fin and shimmering body, it’s ideal for pet parents who love fun, themed dress-ups. Comfortable for all-day wear and easy to slip on, this mermaid look is great for small and large dogs alike. Whether you're heading to a costume contest or having an at-home celebration, your pet will be the star of the seven seas! SIZE CHART Size 2XS-2TP: Neck: 8"–10" (20.5–25.5cm), Chest: 10"–11" (25.5–30.5cm) Size XS-TP: Neck: 10"–11" (25.5–28cm), Chest: 12"–14" (30.5–35.5cm) Size S-P: Neck: 11"–12" (28–30.5cm), Chest: 14"–16" (35.5–40.5cm) Size M-M: Neck: 12"–14" (30.5–35.5cm), Chest: 16"–18" (40.5–45.5cm) Size L-G: Neck: 14"–17" (35.5–43cm), Chest: 18"–21" (45.5–53cm) Size XL-TG: Neck: 17"–21" (43–53.5cm), Chest: 21"–26" (53.5–66cm) Size 2XL-2TG: Neck: 21"–24" (53.5–61cm), Chest: 26"–32" (66–81cm) Size 3XL-3TG: Neck: 24"–27" (61–68.5cm), Chest: 32"–36" (81–91.5cm) Size 4XL-4TG: Neck: 27"–30" (68.5–76cm), Chest: 36"–40" (91.5–101.5cm)