My preliminary searchings have found me:

from Whistles.

from rarefashion.com

from Monsoon.

from Oli.com
As you can see, I'm not really going for the BA-NAHHH in your face, I-am-most-certainly-a-prom-dress dress. But something special, that I could wear to other formal occasions. Anyone else got some suggestions of dresses/sites to check out?