The community custom of adult sponsors helping provide items or services for a quinceañera is called padrinazgo.
Padrinazgo refers to sponsorship, in which padrinos and madrinas help a family with parts of the celebration. Depending on the family and region, sponsors may contribute clothing, food, music, decorations, photography, transportation, or religious items. The arrangement can strengthen relationships between families and trusted community members.
The practice is related to the broader Hispanic idea of compadrazgo, a network of social and religious relationships created through godparenting and sponsorship. The terms are connected but not identical: padrinazgo specifically emphasizes the act or system of sponsorship.
Quinceañera sponsorship is not a legal requirement and does not follow one fixed financial model. Some modern families avoid formal sponsorship, while others divide expenses among many relatives and friends.