What would you wear? It's at 4.30pm (or half past four o'clock, as it says on the achingly tasteful invite). There's no dress code I can see. It just says 'dinner, dancing and celebration to follow', and am pretty sure it's going to be v v WASPy and tasteful.
So is it day-at-the-races? or slinky cocktail wear? Or is it Oscars night??