A grey shift dress and a grey coat are surely worth adding to your list of essential pieces. For maximum style effect, add a pair of black suede over the knee boots.
Grey Shift Dress with Black Suede Over The Knee Boots Outfits
If you don't like spending too much time on your looks, reach for a grey shift dress. Let your outfit coordination chops really shine by finishing off your outfit with black suede over the knee boots.