What is the traditionally female guest of honor at a quinceañera called?

The traditionally female guest of honor at a quinceañera is called the quinceañera.

The same word is also commonly used for the celebration itself, which can make context important. When it refers to a person, it identifies the girl or young woman marking her fifteenth birthday. When it refers to an event, it describes the party and associated ceremonies held in her honor.

The honoree is usually central to every major part of the program. She may choose the dress, participate in a church service, enter with attendants, perform a formal dance, receive family tributes, and take part in symbolic rituals. These practices differ widely and are not requirements shared by every family.

The term is sometimes mistakenly treated as the name of a dress or a specific dance. It is neither. The dress may be called a quinceañera dress, while the attendants can have separate titles such as damas and chambelanes.