An "opera girl" typically refers to a female dancer or figurante employed by opera houses, particularly during the 18th century in Europe.
Essentially, the term wasn't typically applied to the principal singers. Instead, it designated women who were part of the ballet corps or other ensemble performers within the opera house. These "opera girls" often played supporting roles on stage, contributing to the visual spectacle and overall performance.
The term reflects the cultural context of the time, highlighting the visibility and sometimes romanticized perception of these performers.
