Emma is wearing a red halter Giambattista Valli gown with bow detail on the halter. Nicole Kidman wore this exact gown too. In my opinion both look amazing in it. I love the red color and the bow on the halter.
Emma Stone Photos - Actress Emma Stone attends the Opening Ceremony and 'Birdman' premiere during the Venice Film Festival on August 2014 in Venice, Italy. - Opening Ceremony at the Venice Film Festival
Kate Hudson Photos - Kate Hudson attends the "China: Through The Looking Glass" Costume Institute Benefit Gala at the Metropolitan Museum of Art on May 2015 in New York City. - 'China: Through The Looking Glass' Costume Institute Benefit Gala - Arrivals