The mermaid dress is a style of gown that features a tight silhouette from the waist to the knees before flaring out at the hem. These dresses, with curves that resemble the lower half of a mermaid's body, are graceful and glamorous. This style is considered attractive both for the emphasis of the curves, and for its distinctively femme aura.
Cogita (from Pokémon Legends: Arceus) looks almost regal in her jet black mermaid dress, don’t you think?
Do any of the illustrations below have you wishing you were part of that world?