I was going to say what Laura said.. she just beat me to it. This is hands down 100% perfect on you.
ETA... You talked about adding edgy accessories to counter the classic of the dress, but honestly, this dress didn't scream overly classic or overly feminine to me at all. I like your idea of white jacket and earrings, but I'd leave the pearls off. I really like it just as you are wearing it in the dressing room, with your metallic shoes and no other accessories.. This dress really does make a great statement on it's own. Be careful not to over accessorize.