The girls’ mermaid princess costume set features a captivating light-up mermaid dress adorned with shell, pearl, and seaweed designs, complete with a sparkling princess crown, a shimmering cape embellished with sequins, a magic wand, and elegant gloves. The dress includes built-in LED lights (requiring 3 AAA batteries, not included) that create a magical glow, transforming your little girl into a mesmerizing mermaid princess for playtime and parties. Crafted from soft and breathable materials, this costume ensures comfort and is available in sizes for ages 3-4(S), 5-6(M), and 7-8(L). Perfect for Halloween, birthday parties, themed events, or imaginative game, this enchanting outfit encourages creativity and allows young girls to explore their underwater fantasies, making it an essential addition to any dress-up collection.