Popsugar Fashion Fashion Designers Mary-Kate and Ashley Olsen's Style Icon Mary-Kate and Ashley's 75-Year-Old Muse Is About to Become Your New Style Icon August 26, 2015 by Sarah Wasilak View On One Page Photo 3 of 22 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 3 And Looks Cool in Black and White Previous Next Start Slideshow Ashley OlsenMary-Kate OlsenFashion DesignersThe RowCelebrity DesignersFashion Instagrams