As you can see, looking sophisticated doesn't require that much effort. Just wear a brown cardigan with a dress shirt and you'll look awesome.
Brown Cardigan with Dress Shirt Cold Weather Outfits For Women In Their 30s
If you're a fan of classic pairings, then you'll love this combination of a brown cardigan and a dress shirt. To inject a more casual aesthetic into your getup, add a pair of brown leather lace-up flat boots to the mix.