What is the traditional English term for the attendants accompanying a quinceañera?

The attendants accompanying a quinceañera are traditionally called her court of honor.

A court of honor usually consists of friends, relatives, or other young people selected by the celebrant and family. Its members may participate in the entrance, formal dances, photographs, and other parts of the program. The size and composition are not fixed worldwide.

The court may include damas, or female attendants, and chambelanes, or male attendants. Some celebrations use only one type of attendant, while others have a mixed group. Modern families may also choose a gender-inclusive group or omit the court entirely.

The phrase is ceremonial rather than governmental. It does not mean that the quinceañera holds a political office or a legal title. It describes the people who publicly accompany and support her during the celebration, much as attendants do in other formal social ceremonies.