As you can see, it doesn't require that much effort for a man to look seriously stylish. Just consider pairing a navy blazer with a white and black horizontal striped crew-neck t-shirt and you'll look incredibly stylish. Finishing off with a pair of beige leather loafers is a guaranteed way to infuse an added dose of style into this look. This look is a great option when warmer days are here. So if you're looking for outfit inspo for dressing in your 30s, this pairing is definitely worth saving for later.