The symbolic gift called “la última muñeca” at a quinceañera is a doll.
La última muñeca translates as “the last doll.” In the tradition, the quinceañera receives a doll as a symbol of leaving childhood behind. The gift may be presented by a parent or another important family member during the formal celebration.
The doll is part of a wider set of symbolic rituals associated with the fifteenth birthday. Other examples can include the changing of shoes, the presentation of a ring or Bible, a candle ceremony, and a formal dance. No single list applies to every family, and many modern celebrations select only a few customs.
The phrase does not mean that the celebrant literally can never own or receive another doll. It expresses the symbolic idea that the quinceañera is marking a transition from childhood. Families may also reinterpret the custom in a contemporary or nonreligious way.