Blue & silver tube from Warehouse summer 07 collection size 14 or 16 wanted?????

I had seen this blue tube dress on a friend at the wk end she told me she bought it from Warehouse in July. Its blue with sliver like sparks or stars all over it and knee lengh. Im looking for it in either a size 14 or would even take a 16. I have seen one on ebay but its only a size 10. Any ideas or help would be great, thanks!