Dean/Peter/NPG.com, Brian Ach/Getty Images
D is for Denim Top
Denim button-downs aren't just for cowhands anymore: Paired with high-heeled sandals and a pencil skirt—as seen on Ginnifer Goodwin, far left, and Hilary Duff—a chambray shirt is well-suited to both a business meeting or a laid-back afternoon stroll.