Rihanna and the Other Most Memorable Red Carpet Moments of 2015\nA pearl-covered Lupita Nyong'o, Zendaya's Oscar dress, and anything Rihanna wore—these are the looks that defined 2015.\nRihanna. Photo by Getty Images.\nLupita Nyong'o in Calvin Klein Collection at the Oscars. Photo by Getty Images.\nMiley Cyrus in House of Holland. Photo by Getty Images.\nZendaya in Vivienne Westwood. Photo by Getty Images.\nCara Delevingne in a Stella McCartney jumpsuit and temporary tattoos by Bang Bang. Photo by Sherly Rabbani\nCaitlyn Jenner. Photo by Getty Images. \n\nRead more about this look here.\nKim Kardashian in Givenchy. Courtesy of Getty/Gucci\nLady Gaga. Photo by Getty Images. \n\nRead more about this look here.\nGigi Hadid in Atelier Swarovski and Michael Kors. \n\nPhoto by Sherly Rabbani.\nRihanna at the Met GalaWhether you loved it or hated it, the dress that launched a thousand memes is the ultimate Halloween costume. If you can’t get your hands on the Guo Pei original, a few yards of mustard silk and fur fabric—and golden headpiece—will do the trick. \n\nPhoto by Sherly Rabbani and Josephine Solimene.\nJessica Stam in Francesco Scognamiglio at Leonardo DiCaprio's St. Tropez Gala. \n\nPhoto by Getty Images.\nGigi Hadid. Photo by Getty Images.\nMiley Cyrus in Miu Miu. Photo by Getty Images\nSia in Miu Miu. Photo by Getty Images.\nZendaya Coleman. Photo by Getty Images. \n\nRead more about this look here.