That dress looks great never, and I love it with the necklace, even if it's not the necklace you wanted! I see what you mean about it being versatile - to play up or play down the sparkle...
How annoying about the jumper, Laska! Particularly as you could have swiped the one you spotted yesterday if you'd known. Maybe that one IS actually heading to you? Who knows... I'd have thought that they would keep a track of "back orders" to send on as returns come in, rather than putting them back up on the website. Though it may well be too big for you in the S anyway, as you say.
I haven't tried the zebra dress flipflapbat but I think it is fab and I think you should get it
(#nothelpful). It looks a great print and a nice style. I had a rare moment of sense, though, and I thought for my lifestyle I probably wouldn't wear it enough to justify.