If I could snap up one dress this season it would be this delicate, dark, and dangerous little number from Valentino. I say "could" because it's sadly still unavailable to the general public, only recently gracing the ready-to-wear collection from this past September.
This gown reminds us that Spring isn't exlcusively for bight, floral patterns and loads of color. Here, the grace and femininity at the heart of such trends is distilled into a subdued gown that feels stolen from bedroom of an exotic courtesan.
Of course, a girl might look out of place wearing this around in a grocery store. For everyday life you could capture the same feeling with a black lace dress or top over jeans. From there I'd accessorize with something like this Silver Rhinestone Disks Necklace set. Cap that with a dark, glitter-based nail polish like O.P.I.'s Stay The Night to add a touch of edge and mystery.