Popsugar Fashion Red Carpet Best Red Carpet Dresses 2015 The 50 Best Red Carpet Dresses of 2015 December 15, 2015 by Erin Cullum View On One Page Photo 42 of 50 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 42 Rachel McAdams Rachel McAdams in Valentino at the Toronto International Film Festival. Previous Next Start Slideshow Red CarpetBest Of 2015Best Dressed