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 6 of 10 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 6 Topshop Hola black cross-buckle flat sandals ($40) Topshop Hola black cross-buckle flat sandals $40 from us.topshop.com Buy Now Previous Next Start Slideshow Ashley OlsenMary-Kate OlsenSpring FashionFashion TrendsGet The Look