"It would be a bonfire of the vanities"
Bernadino of Siena organising the vanities bonfire. Perugia by Agostino de Duccio1457-1461
Creative Commons Attribution Share AlikeBernadino of Siena organising the vanities bonfire. Perugia by Agostino de Duccio1457-1461 - Credit: Giovanni Dall'Orto

The bonfire of the vanities refers to the public burning of items deemed to be associated with sin.  Bernadino of Siena frequently held such bonfires to accompany his sermons in the 15th century; items thrown on the fires were usually such things as mirrors, combs, cosmetic and expensive clothes.