Could anything be simpler than slipping into a black-and-white dress with a classic silhouette? Emmy Rossum chose to do just that last night at a benefit screening of August: Osage County in Los Angeles, where she wore a ladylike dress from Oscar de la Renta's Resort 2014 collection. The dress, with its fitted bodice and full skirt, recalled straightforward midcentury elegance, but the print was wild enough to make things modern.