This week, a bundle of actresses had real, major, classically elegant moments on the red carpet. Kristen Stewart and Bella Heathcote both rocked Balenciaga--from Nicolas Ghesquiere's spring 2013 and fall 2012 collections, respectively, the same week his departure from the label was announced. Jessica Alba and Keira Knightley stunned in Valentino, as one does. And Marion Cotillard wore another freaking Raf Simons for Dior dress--not that we're mad about it. It just seems like she might end up wearing the entire collection before it even hits stores. Click through for all that flawlessness and more.