Thanks all! The dress was from the Gina Bacconi sale; they have four sales a year here in NW London at their warehouse, and it's always a bit of a scrum; especially on the weekend, when it starts. When I tried it on I wasn't 100% sure, something was wrong; then someone I knew who was in the communal changing room with me said "it's too long on you." It was mid calf, as I am very short, it didn't look right, so I had it shortened and now I totally love it! Wore it to a "do" last Friday night and had so many "wow!"s even from people who had seen me and knew (in theory anyway) that I was losing weight, this dress made them sit up and notice me!