The simplest way to match your boyfriend's clothes is by wearing the same colors. Look at the tones in his wardrobe and wear pieces with the same hue. It doesn't matter if the type of clothing is different; visually, you will still match if the color palette is the same. For a slightly more advanced option, wear the same pieces cut with the same silhouette – for example, suits or jeans – in complementary tones. You can also both wear unisex accessories, such as sunglasses or hats, that match.