A traditional quinceañera is usually opened by a waltz.
The birthday celebrant commonly performs a choreographed waltz with her court, which may include relatives, friends, damas, and chambelanes. The dance is often rehearsed for weeks or months because it is a central public moment of the reception.
The waltz reflects European influence on the celebration, especially the formal presentation of a young woman to her community. Modern quinceañeras may add contemporary dances, music, or surprise choreography, but the waltz remains a recognizable traditional element.
People sometimes confuse the opening waltz with the religious service that may precede the party. The religious ceremony is often called a quinceañera Mass or misa de acción de gracias, while the waltz belongs to the social celebration. Customs vary widely by family, country, and denomination.