Non traditional wedding dress!

Hi folks,


Would very much appreciate your help here. Luckily I'm getting married abroad at Christmas, will be booking it this week, either the Carribean or Sri Lanka - somewhere warm and beachy! Its all a bit impromptu and low key - just myself, Mr Man and maybe some close friends.
Now, I'm looking for a really great dress, doesn't have to be white, patterned would do or whatever, am prepared to spend up to €500 or thereabouts, also no snob about cheapies.
Could be a cocktail dress, or a wedding type dress I could dye after, but its gotta be fantastic... A cool silk floaty maxi dress like they had in julienne a few months back would also do the job...
My style is usually quite funky, I like style, open to ideas... do any of you fashionable people have any cool ideas, shop suggestions or links?

Thankyou so so much