It's little wonder that the likes of Beyonce, Rihanna and Emma Stone look to Preen by Thornton Bregazzi for dresses - they're feminine and beautifully made. This 'Elda' style is cut from floral-print devoré-satin made with plenty of silk and traced with flouncy ruffles. It comes with a detachable lace-trimmed slip and has an adjustable drawstring at the waist.