A quinceañera traditionally marks a girl's 15th birthday.
The Spanish word quinceañera refers both to the celebrant and, commonly, to the birthday celebration itself. The number 15 is central because the event symbolizes a transition from childhood toward young womanhood in many Latin American and Latino communities.
Customs vary considerably by country, family, religion, and generation. Some celebrations include a religious service, a formal entrance, a choreographed dance, symbolic gifts, and a reception. Others are secular or adapted to local family traditions.
The celebration should not be confused with a universal legal status change. Turning 15 does not by itself grant adulthood, voting rights, or marriage eligibility. Its meaning is cultural and ceremonial, and many families now personalize the event or celebrate a quinceañero for a boy.