What is the usual English translation of “quinceañera” when it names the birthday celebration itself?

When it names the event rather than the celebrant, “quinceañera” is usually translated into English as “fifteenth birthday.”

The translation describes the central milestone, but it does not capture every cultural meaning of the Spanish term. A quinceañera can include formal clothing, a reception, dancing, speeches, symbolic gifts, and religious observance, depending on the family.

It is sometimes compared with a sweet sixteen party in the United States, but the two traditions are not the same. They differ in age, historical development, religious associations, and customary rituals. A quinceañera is also not a wedding, even when the celebration includes a formal entrance and an elaborate gown.

English speakers frequently use the Spanish word unchanged because it identifies a specific Latin American cultural tradition more precisely than a general birthday label.