This casual combination of a white and red short sleeve shirt and beige jeans is extremely easy to throw together without a second thought, helping you look stylish and prepared for anything without spending a ton of time digging through your wardrobe. Throw a pair of low top sneakers in the mix for extra style points. It's is an obvious pick when it comes to a kick-ass summer-to-fall look. This pairing illustrates that in your early 20s, you have a wide array of dressing options.