Ali Larter ran an errand in West Hollywood wearing the perfect weekend look: a denim button-down shirt, black skinny jeans with zippers at the ankles, and black Converse All Stars. You probably already have all three pieces in your closet, so put them together while grabbing coffee or grocery shopping this weekend. Then finish your casual style with yellow sunglasses and long silver chain necklaces just like Ali did. If you don't already have the perfect denim top, we recommend this one by Maison Scotch ($145).

