A longtime American wardrobe staple is suddenly coming back from the grave

Reuters Not too long ago, it appeared that denim was dead and gone. With office wear getting more casual by the day and the emergence of athleisure, denim was decreed uncool by the standards of teens.  But there's recent evidence that teens may not hate denim anymore. In Piper Jaffray's semi-annual "Taking Stock With Teens Survey," the research firm confirmed that teen girls are wearing jeans for the first time in a few years. In a list of trends favored by upper-income females, "jeans" cracke...