Show off your styling game in an olive polo neck sweater and a crew-neck t-shirt. You could take a more casual route in the shoe department by wearing white leather low top sneakers. Keep this ensemble ready to go come warmer days, and we promise you'll save time brainstorming for what to wear on more than one occasion. After thirty, you want to start dressing like a grown-up. That's when outfits like this come in very useful.