While skirts have hemmed women into traditional notions of femininity, a skirt’s length, style and fabric – dangling from the waist with few restrictions – can also connote freedom, wealth and agency. Correspondent Faith Salie talks with fashion designer Christian Siriano, and with Kimberly Chrisman-Campbell, author of “Skirts: Fashioning Modern Femininity in the Twentieth Century,” to discuss what skirts tell us about our culture – and how women think of themselves.