Which party dress would you wear?

Picture this: You're going to a holiday cocktail party, and your adorable crush will be there. You brush your hair, spritz on perfume, and your cheeks are already rosy. The big question is: What will you wear?

Above, a black glitter dress (I LOVE how sexy and elegant it is)...
A flirty one-shouldered pink dress...
A 1920's chiffon dress with a flutter hem...
A purple wrap dress with a sash...
A pink silk dress (I think this one is offbeat yet so gorgeous--what do you think?)

Which dress would you wear? Which suits your personality best?