For a casual getup, opt for a white long sleeve shirt and a grey parka — these items go pretty good together. Rounding off with a pair of loafers is the simplest way to infuse a dose of sophistication into this look. With a look like this in your winter closet, you're guaranteed to keep warm and look amazing despite the cold weather. If you're wondering what you should wear as a 30-year-old, this combination is a good source of inspiration.