Kristen has worn Balenciaga on the red carpet before, most notably a short and sheer dress that showed flashes of skin. In a press release, she called designer Nicolas Ghesquiere's creations "incredibly bold and forceful, yet feminine and sexy." And Ghesquiere, who first met the star in 2006, also had high praise for her. "From her early appearance in Panic Room to her independent choice of Welcome to the Rileys, I've always sensed her progressive character," he said. Expect the campaign to roll out this Fall.