Even strictly as a people-watching endeavor, each runway show of Fashion Focus Chicago is fascinating. Each one attracts a distinct and segmented audience: The Chicago Fashion Incubator show brought out major names in the fashion media; Dress Code attracted, not surprisingly, a crowd of students and fashion academics, and Friday’s the Art of Fashion, the final headlining show of Fashion Focus, attracted more of a society set. While there were some sportswear-themed pieces, dresses and gowns appropriate for charity balls and gala events were definitely the focus of the evening.