Why not pair a crew-neck t-shirt with black skinny jeans? As well as very comfy, these pieces look cool combined together. Consider a pair of black and white slip-on sneakers as the glue that ties this outfit together.
Black and White Slip-on Sneakers with Crew-neck T-shirt Casual Hot Weather Outfits For Women
For a surefire casual option, you can rely on this combination of a crew-neck t-shirt and black floral shorts. A pair of black and white slip-on sneakers is a nice option to finish this getup.