A black open cardigan and navy jeans? It's an easy-to-create outfit that you could work on a day-to-day basis. For something more on the classier end to complement your outfit, complement this outfit with grey suede ankle boots.
Grey Suede Ankle Boots with Navy Jeans Warm Weather Outfits After 50
Combining a grey open cardigan and navy jeans will be a good demonstration of your outfit coordination expertise even on lazy days. Give your ensemble an extra dose of chic with grey suede ankle boots.