What are poofy dresses called?

Poofy dresses are often referred to as "ball gowns" or "princess dresses." These styles are characterized by their voluminous skirts, which can be achieved through layers of tulle, crinoline, or other materials. They are commonly worn for formal occasions, such as proms, weddings, or pageants, and evoke a fairy-tale aesthetic. In casual contexts, they might also be called "fluffy dresses" or "skater dresses" depending on their specific design.