A denim shirt should be at the top of your Spring shopping list. It makes a great throw-on piece for when you need a cover-up but not a jacket. Kate Bosworth recently rocked a dark denim version, while Haylie Duff tried a lighter style. I picked up this PacSun Boyfriend Medium Denim Shirt ($15, originally $40), which also comes in a light wash. The price is right and the cut is cool. Throw one on over any dress, pair it with khakis, leggings, or a bikini, tie it, button it, leave it open . . . the possibilities are endless.