Popsugar Fashion Spring Fashion Mary-Kate and Ashley Olsen Wearing Birkenstocks The Olsens Are Twinning For the First Time in Decades March 25, 2014 by Leah Melby View On One Page Photo 1 of 10 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 1 Jeffrey Campbell black studded Jerez flat sandals ($130) Jeffrey Campbell black studded Jerez flat sandals $130 from nastygal.com Buy Now Previous Next Start Slideshow Ashley OlsenMary-Kate OlsenSpring FashionFashion TrendsGet The Look