amazingitaly - I've gone for Hampton by Maggie Sottero (link below) - its fairly big but not massive. I actually got the box off ebay - its 1cm under the allowed dimensions and was the biggest one I could find!!
The airline have said we can take it in the garment bag but it would still have to fold to the same dimensions as the box that it apparently wont fit into. I'm quite reluctant to try and force it into the box as it will be in there for about 24 hours and I dont want to crease it really badly. I dont think I'd try the hotel to try and iron it either - imagine if they somehow ruined it, melted the beading etc. I'd rather try and let them fall out in a steamy bathroom but that wont work if its super creased.
I'll get my H2B to phone the airline but not holding out much hope at this late stage.
Just cant believe it, I think I'll have to accept that its going to have to go in the hold, I know the chances of it going missing are pretty slim but I'll just be so stressed for the whole journey there and back worryinbg about it.
BLK bride - I would think your (v gorgeous) dress should fit in ok from the pic you posted of it, the shop said it would have been fine for a smaller dress to go in, I really think yours should be ok, looks like there's less material to it compare with mime.
Feeling soo rubbish today, I've got enough to stress about without this too

Drowned my sorrows last night and now have a hangover to top it off, I never learn, lol.
http://www.maggiesottero.com/dress.aspx?style=A3293