A ball gown is the formal garment traditionally worn by a quinceañera during her celebration.
The dress is usually an elaborate, floor-length gown chosen to make the honoree the visual focus of the event. It may include a full skirt, fitted bodice, embroidery, beading, or a coordinating tiara. White and pastel colors have been common, although contemporary honorees may select nearly any color and style.
The formal gown developed alongside the modern image of the quinceañera as a highly staged social celebration. Its appearance can draw on bridal fashion, European court dress, and local Latin American party traditions without making the event a wedding.
A quinceañera’s dress should not be confused with a wedding gown. The celebration marks a fifteenth birthday and cultural transition, not marriage. Some families now choose cocktail dresses, pantsuits, themed costumes, or culturally specific clothing instead of a conventional ball gown.