The Spanish name for the formal celebration of a girl’s fifteenth birthday is fiesta de quince años.
The phrase translates literally as “party of fifteen years.” It emphasizes the birthday milestone itself, whereas quinceañera can refer either to the young woman being celebrated or to the event. In everyday speech, both expressions are widely understood in many Spanish-speaking communities.
Regional vocabulary varies. Some families simply say quince, quince años, or use quinceañera as the event name. English-language communities may also use “sweet fifteen” or “fifteenth birthday,” though those translations do not replace the Spanish expressions in every setting.
The celebration’s format is not fixed by the phrase. It may include a church service, formal entrance, court, dance, symbolic gifts, dinner, music, and a reception, but families may include only the elements that suit them.