This black Marques'Almeida asymmetric silk dress features spaghetti straps and an asymmetric hem with a ruffle edge. Expertly spun from sumptuous silk, this slinky number will hug you in all the right places — and rightly so — for as Madeleine Vionnet claimed: 'the dress must not hang on the body but follow its lines. When a woman smiles, a dress must smile with her'.