A grey blazer and a crew-neck t-shirt are absolute staples if you're figuring out a smart wardrobe that holds to the highest sartorial standards. Add a more informal twist to your getup by finishing with a pair of white canvas low top sneakers. Seeing as autumn is taking over, this ensemble is a great pick for the time in between seasons. So if you need fashion tips on how to dress as you go into your 30s, this pairing is definitely worth saving for later.