A style in European art that moved away from Renaissance classicism and naturalism toward an expressive and imaginative visual language, with elongated bodies, exaggerated poses, and distorted perspective. Appearing  first in Florence and Rome, Mannerism lasted from around 1520 until the end of the 16th century. Prominent artists working in the Mannerist style include Rosso Fiorentino, Giulio Romano, Parmigianino, Jacopo Pontormo, Agnolo Bronzino, and Jacopo Tintoretto in Italy, along with El Greco in Spain, and Francesco Primaticcio in France. Web resource here.

Parmigianino. Madonna with the Long Neck. Oil on panel. 1535-40. Uffizi Gallery, Florence.