The sponsors who help provide ceremonial items at a quinceañera are commonly called padrinos.
Padrinos is the plural of padrino, a Spanish word meaning godfather or male sponsor; padrinas is the corresponding feminine plural in some usage. In quinceañera customs, sponsors may contribute money or specific items, such as the dress, cake, flowers, jewelry, Bible, rosary, or music. The exact responsibilities depend on the family and local tradition.
The role can strengthen relationships between families and trusted adults. It does not automatically mean that the sponsors are the celebrant's baptismal godparents, although the same people may sometimes serve both roles.
Because quinceañera practices differ widely, a family may have one sponsor, several sponsor couples, or no formal padrinos. The word is therefore best understood as a customary role rather than a universally defined office.