pecka, beware because coast dresses are very generously sized.... if you were going to buy a dress off ebay you should perhaps try some on in coast to check what size to be.
a great thing about coast dresses i s that they sell really well on ebay, so you'd probably get your money back after wearing it.
i bought a coast dress off ebay for £65 and 2 identical to it have sold this week on ebay for £125!