Your big princess moment -- literally! -- calls for a proper gown, and there is no one who does Proper Amazing Gowns better, I think, than Elie Saab at the moment. If I were in need of a tremendous show-stopper, that's where I'd go first, too.
Whoever is doing the styling here is nailing it. Her clutch is about to strike midnight, even. (I wonder if she changed into a pumpkin outfit for the afterparty?) One of you said the other day that Elie Saab really knows how to use illusion netting properly, and I have to agree. The top of this could have SO EASILY slide into Long Program-ville, but I don't think it did.
I decided this show was snapped just as she caught sight of Cate Blanchett. Doesn't everyone clasp their hands with joy when Cate Blanchett enters their eyeline? I certainly should hope so.
She is welcome to leave behind one OR BOTH of these with me when it comes time for her to go home at the end of the night.