Victoria Keyhole A-Line Dress from Jaeger
The dress is part of the Boutique collection, the younger, edgier sibling to the main Jaeger line. It's a simple piece, sixties inspired, in a deep shade of burgundy with contrasting white Peter Pan collar and keyhole button detailing. Being sleeveless, it would work well for summer with smart black sandals and a cardi and see you through into Autumn when it woud look just as good layered with black opaques and a polo neck.
The dress costs £120 from Jaeger - check it out online here.