Mermaid dresses have been around for centuries and are a popular choice for many special occasions. These dresses are form-fitting and often have a train that trails behind the wearer. Mermaid dresses can be made from a variety of materials, including satin, chiffon, and tulle. They are often adorned with beads, sequins, and other embellishments. While they are typically associated with formal events, such as weddings, they can also be worn to more casual affairs.