Mary Kate Olsen is one of a kind. She is not the kind of person that would wear head-to-toe high end pieces all at once. A true fashion icon to me is someone who mixes and matches and makes it look very fashionable. Mary-Kate is known as the boho chic style, which kind of has that effortless look to it. She pairs a high end designer piece with something vintage, and that's what makes her so fashionable. Someone that is wearing all one label isn't putting any effort or fun into their outfit or style. You pair things with vintage pieces and that's what makes you stand out. Mary Kate is definitely a trend setter and knows her personal style.