I would recommend an American site - www.rebeccarode.com

I live in the UK and ordered my Mori Lee dress from here. It arrived a couple of weeks ago and I'm really impressed!

I saved myself loads of money off the retail price, and it arrived with all the official tags in tact. I also didn't end up paying any import tax which was even better!

Good Luck with finding your dress - I would definitely recommend you look at the site if only to see how much money you could save!!

H