A quinceañera traditionally celebrates a girl’s 15th birthday and her transition into a new stage of life.
The word refers both to the celebrant and to the celebration itself. In many Latin American communities, the event combines family customs, formal clothing, music, dancing, food, and sometimes a Catholic Mass.
The age is symbolic rather than a universal legal threshold. A quinceañera does not legally make someone an adult, and practices vary by country, family, religion, and community. Some families emphasize the religious service, while others focus on the reception.
The tradition is especially associated with Latin America and Latino communities in the United States. Similar coming-of-age celebrations can have different names and customs elsewhere, so the number 15 is the defining milestone for a quinceañera.