Final answer:
Yves Saint Laurent's creation of the Le Smoking tuxedo suit for women in 1966 helped introduce more androgynous styles in women's fashion, including power suits and pantsuits.
Step-by-step explanation:
The silhouette created by Yves Saint Laurent in 1966, known as the Le Smoking, revolutionized women's fashion by introducing the concept of a tuxedo suit for women. This garment opened up a new era of more androgynous styles for women, including power suits and pantsuits. The Le Smoking featured a tailored suit with a fitted jacket, trousers, and a satin lapel collar, allowing women to exude a sense of elegance, sophistication, and power traditionally associated with male attire.