It was a common type in painting until the change in atmosphere after the Council of Trent, in which it was rather discouraged by the church, at least in public contexts, on grounds of propriety.
[5] The appearance of such paintings in Tuscany in the early 14th century was something of a visual revolution, partly replacing Queen of Heaven depictions; they were also popular in Iberia.
[8] Another composition from the same Flemish milieu, mostly found on the cheaper support of linen rather than panel, appears to have been connected with devotions to the Immaculate Conception.
[9] Another type of depiction, also deprecated after Trent, showed Mary baring her breast in a traditional gesture of female supplication to Christ when asking for mercy for sinners in Deesis or Last Judgement scenes.
[11] In art he usually kneels before a Madonna Lactans, and as Jesus takes a break from feeding, the Virgin squeezes her breast and he is hit with a squirt of milk, often shown travelling an impressive distance.