A crew-neck sweater and black skinny jeans are a cool casual uniform. For something more on the daring side to complete your ensemble, complement your getup with black lace-up flat boots.
Black Lace-up Flat Boots with Crew-neck Sweater Casual Outfits For Women In Their 30s
For a look that's very simple but can be styled in a multitude of different ways, dress in a crew-neck sweater and a black leather pencil skirt. Dial down the dressiness of this ensemble by sporting a pair of black lace-up flat boots.