A button-down shirt is a must-have piece that can be styled in a plethora of ways: tucked in, buttoned half way, rolled up sleeves, or even tied at the waist. Here are 15 ways Mary-Kate and Ashley Olsen styled theirs. We've rounded up the best Olsen-style button-down shirts from the latest Shopbop sale. Get up to 25% off with code: EVENT17
