The person celebrating a quinceañera is called the quinceañera, rather than a dama or chambelán.
The quinceañera is the central honoree of the celebration. She is traditionally a girl reaching her fifteenth birthday, and the event publicly recognizes her transition from childhood toward young adulthood. The word may also be used for the entire celebration, which can create confusion when discussing the honoree and the party.
Damas and chambelanes belong to the court of honor. They support the honoree during formal entrances, choreographed dances, photographs, and other planned parts of the event. A madrina, by contrast, is typically a female sponsor or godmother and may help with a specific ceremonial or financial responsibility.
Not every modern celebration uses these roles. Families may simplify the event or replace traditional titles, but quinceañera remains the standard term for the female fifteenth-birthday honoree.