Slip dresses are a great investment because you can wear them year-round, depending on how you style them. Jang even broke down some styling ideas for your slip dresses by season below.  Winter: A midi or maxi slip dress can be layered over a turtleneck and paired with knee-high boots and a long teddy coat. Spring: Pair a midi slip dress with a blazer and a classic white sneaker. Summer: Wear a mini slip dress with gold accessories and pair it with a strappy sandal. Fall: Slip into a midi slip dress, layer a cardigan and a long trench coat over it, and pair with knee-high boots.