This pairing of a grey dress shirt and white dress pants is seriously dapper and creates instant appeal. For something more on the casually cool side to round off your getup, add a pair of dark brown suede loafers. Keep this look ready to go when warmer days are here, and we promise you'll save time planning an ensemble on more than one occasion. As you're moving from your 20s to your 30s, you probably want to start dressing in a dressier manner. In this case, outfits like this are a safe option.