Fabric choice is crucial when you're deciding on a mermaid wedding dress. For a more structured look that holds the shape of the flare, go for thicker materials like satin or taffeta. If you're leaning toward a softer, more romantic vibe, then lace or chiffon could be your best bet. Think of it like choosing between the sturdy shell and the delicate scales of a mermaid: both are beautiful, but they serve different purposes. And don't forget about the season! Heavier fabrics might be better suited for cooler weather, while lighter ones are great for a summer beach wedding.