This pairing of a navy trenchcoat and blue jeans comes in handy when you need to look casually sleek in a flash. If you want to easily dress down this outfit with a pair of shoes, why not add a pair of white and blue canvas high top sneakers to the mix? Keep this look ready to go come warmer days, and we guarantee you'll save a ton of time getting dressed on more than one occasion. If you're often not sure how to dress appropriately for your age, this combo is a great example.