When you need to go about your day with confidence in your ensemble, consider pairing a shawl cardigan with a charcoal crew-neck t-shirt. Don't know how to finish this getup? Finish off with a pair of beige suede monks to dial up the classy factor. This outfit is a good pick come spring. As you're moving from your 20s to your 30s, you probably want to start dressing like a grown man. In this case, looks like this prove useful as a source of inspiration.