A quinceañera is traditionally celebrated when a girl turns 15.
The word refers both to the celebrant and to the birthday celebration marking her fifteenth year. In many Hispanic and Latin American communities, the event symbolizes a transition from childhood toward young womanhood. The exact customs vary widely by country, family, religion, and budget.
A modern quinceañera may combine a religious service, a formal reception, music, dancing, special clothing, and ceremonial presentations. Some families adapt the tradition for boys, couples, or celebrants with nontraditional gender identities, while others emphasize the birthday party rather than a religious rite.
The celebration should not be confused with a legal coming-of-age ceremony. Turning 15 does not generally grant voting rights, marriage eligibility, or adult legal status. Those rules depend on the country and are separate from the cultural tradition.