Developing a summer wardrobe can be very challenging, based on what’s on your calendar. If you are going to work, then you have to choose work clothes. Very Casual Clothing for Women Over 40 Years. If you are interested in going out to enjoy a pure green atmosphere, use clothes that are easy, casual, and still beautiful. Shirt dresses are a great method to achieve a smart but summer style. Apart from skirts, comprehensive clothing may be very good office clothes.