"the lines of a Madonna"

A Madonna is a painting depicting the Virgin Mary, Mother of Jesus, either with or without her son. Dating from the Early Christian Church, no other such icon has permeated Western religious art as much as the image of the Madonna. The earliest example is thought to be a wall-painting in the Catacomb of Priscilla in Rome, but throughout the centuries almost all famed artists have tried their hand at a Madonna in both sculptures and paintings; many of the most famous depictions coming from the Italian Renaissance.