For an ensemble that's very simple but can be worn in a ton of different ways, reach for a grey horizontal striped crew-neck t-shirt and charcoal chinos. Don't know how to finish off your look? Rock a pair of dark brown suede double monks to smarten it up. Stick with this one if you're looking for a standout summery outfit. Wondering what you should wear as you move into your 30s? This combination is the perfect answer.