A beige shawl cardigan and a white crew-neck t-shirt are wonderful menswear staples that will integrate well within your casual fashion mix. For footwear, follow a more elegant route with a pair of brown suede loafers. Bet you could rock a version of this outfit throughout the season. As you get into your 30s, you want to start dressing like a grown man. If that's the case, looks like this are perfect as inspo.