The quinceanera as a whole is a family celebration of a girl's fifteenth birthday found across Mexico, much of Latin America and their diaspora communities, and its Mass of thanksgiving is what gives the day its religious centre for Catholic families. The misa de accion de gracias is a Mass celebrated specifically for the occasion, at which the quinceanera, dressed formally and often accompanied by a court of attendants called damas and chambelanes, renews her baptismal promises and gives thanks for having reached this age, with the priest offering a blessing over her and sometimes over symbolic objects associated with the day, such as a tiara, a last doll, or high heeled shoes marking her transition from girlhood.
The custom has no equivalent status among the church's universal sacraments, and dioceses vary in how formally they structure it, some issuing specific guidelines or a dedicated blessing rite and others leaving the Mass largely to local pastoral discretion. Its cultural roots are debated among scholars, with theories tracing elements to Aztec and other Indigenous Mesoamerican coming of age customs blended over centuries with Iberian Catholic and, from the nineteenth century, European debutante ball conventions, a layered origin the celebration itself rarely settles and does not need to.