In the Personalized Mermaid Costume Set from Melissa and Doug, she’ll be ready for an under the sea adventure. This mermaid dress up set features a sparkly dress that flares into a fishtail! For a truly magical costume, personalize the glittery dress with her name. Plus, she’ll feel like an ocean princess with the sea-shell tiara. An aquatic-kingdom awaits this sweet mermaid. The mermaid role play set promotes imaginative play. It’s great for everyday fun and Halloween! One size fits most 3-6 years. Availability: The Personalized Mermaid Costume Set takes approximately 2-3 business days to leave the warehouse, in addition to transit time.