You're looking at the hard proof that a grey waistcoat and a grey dress shirt look amazing when you pair them up in a polished look for a modern dandy. Complement your ensemble with a pair of brown leather oxford shoes and ta-da: your look is complete. As you're progressing through your late 20s, you want to start dressing in a sleeker manner. In this case, outfits like this are a real life saver.