Over the course of a stellar six-decade career, Barbra Streisand has won Oscar, Grammy, Tony, Emmy and Golden Globe awards. But while her music and movies are seminal, they can’t overshadow her inimitable style. Channeling everything from androgyny to bohemia over the years, the actress, singer and director is a showgirl at heart. From the head-to-toe leopard-print look she wore to the 1966 Chanel show, to the headline-grabbing Arnold Scaasi pantsuit she chose to collect her first Academy Award in 1969, her theatrical streak clearly extends to her closet. This season her influence was felt everywhere from Attico’s flamboyant dresses to Saint Laurent’s party-girl style. And it didn’t stop with the clothes: the kohl cat-eyes that makeup artists Val Garland and Diane Kendal designed for Erdem and Marc Jacobs’ shows were more than a little reminiscent of the beauty look that Streisand owned in the ’60s. Jacobs even sent silk turbans down the runway that looked as though they could have been pilfered from Streisand’s own collection…