Denim on denim has become one of my go-to combos. It’s instantly cool, no matter how you style it. I love mixing light and dark denims on top and bottom. For a preppier look, tuck in your shirt with a belt and pair with flats. For a more boyish look, pair with oxfords like I did here. Pair with sneakers for a sportier look. This combo is so versatile and helps you make the most out of your closet.