At J. Crew the next morning, I found the “Lexington,” a Balenciaga look-alike that cost a tenth of the price. I dragged one of each color (ivory, gray, and black) into the fitting room. I loved the ivory--it gave me a streamlined silhouette and hit just past my hips. But the yellow piping on the cuffs and collar would clash with most of my clothes. Plus, I felt guilty wearing a blatant knockoff. 10 Columbus Circle, at 59th St.; 212-823-9302.