Popsugar Fashion Oscars Sexiest Dresses at Oscars 2015 25 Looks From Last Year's Oscars That Practically Reinvented the Word Sexy February 26, 2016 by Aemilia Madden View On One Page Photo 7 of 25 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 7 Lily Collins Lily Collins caught our attention in a tuxedo-style dress with a sheer bottom and sleeves at the Vanity Fair afterparty. Previous Next Start Slideshow Red CarpetAll AnglesAward SeasonOscars