A girl celebrating her fifteenth birthday in the Brazilian tradition is commonly called a debutante.
The term comes from Portuguese usage and reflects the idea of a formal social debut. Brazilian families may also describe the event as a festa de 15 anos, meaning a fifteenth-birthday party. The honoree’s role can include a formal entrance, special clothing, dancing, and participation by relatives and friends.
This terminology differs from Spanish-speaking traditions, where quinceañera is the usual word for the honoree. Both customs mark a transition associated with age fifteen, but neither term should be assumed to apply across every country. Local language is an important part of identifying the tradition accurately.
In broader English usage, debutante can also describe a young woman being formally introduced into society, especially in historical discussions of elite social events. The Brazilian birthday context is more specific and remains widely recognized as a celebration connected with turning fifteen.