This black velvet and tulle Dianthia midi dress was first spotted as one of the closing looks on Erdem's AW18 runway at London's National Portrait Gallery. It's crafted in the UK for a slim fit with a round neck and short balloon sleeves, and features contrasting lurex stripes across the fluted skirt, complete with polka dot-tulle inserts and coordinating silk lining. Pair it with black stilettos for an impeccable evening edit.