The quinceañera’s formal female attendant is commonly called a dama.
Dama means “lady,” and damas are female members of the court of honor. They may enter with the honoree, participate in the waltz, and wear coordinated dresses selected to complement the quinceañera’s outfit. The singular form is dama; damas is the plural.
The number and composition of the court vary widely. A family may choose only a few attendants, create a larger court, or replace the traditional court with a mixed group of friends. Some celebrations use English terms such as bridesmaids or attendants, but those labels can suggest a wedding and are not exact equivalents in every context. Damas are part of a cultural birthday tradition, not a bridal party. The term madrina usually refers to a female sponsor, so it should not automatically be used for a court member.