Mary-Kate Olsen, with her disheveled hair and over-sized designer clothes, helped popularize the mid-2000's boho-chic look, but it might have been by accident. Asked whether she has any "hidden beauty talents," Mary-Kate Olsen told ELLE that she's actually a amateur and that she never really brushed her own hair. "You know, the truth is I feel like I just learned how to brush my hair like last week!" she joked. It might also have something to do with the fact that Mary-Kate and her twin sister, Ashley, have been media moguls since they were toddlers. They said in an interview last year that they wore designer duds, like Chanel and Marc Jacobs, on the set of Full House. "We were designing clothes for ourselves as we were so petite," Mary-Kate said. "So I think that is when we became obsessed with fit, and now the obsession has become a profession."