Turning out refined day looks and eveningwear since 1981, the house of Herrera specializes in classic shapes (lean trousers, pencil skirts, A-line ball dresses, and nipped-waist jackets) stitched up in soigné silk faille and jacquard, luxurious taffeta and mink. In recent seasons, Oscar regulars like Renée Zellweger have splashed this most Park Avenue of labels with a starry dash of Hollywood Boulevard.