The term 'New Look Pioneer' refers to the French fashion designer Christian Dior, who revolutionized women's fashion in 1947 with his 'New Look' collection. Dior's designs featured a cinched waist, full skirt, and long, feminine silhouette, which was a stark contrast to the utilitarian clothing of the 1940s. Dior's designs were so influential that they sparked a new era of fashion, and he is now considered one of the most important fashion designers of the 20th century.