I'm getting married in approx 6 months time. I have very little cash for a dress and am fine about buying second hand/online. I've got a couple of styles in mind and really do need to go somewhere to try a few on. I've been losing weight (currently a 14) and planning to be a 12 by the time of the wedding. Should I book an appointment at a dress shop and try some things on now or wait until I've got down to a 12 (3 months time I'm thinking). Is it very bad form to book an appointment at a shop to try on and then never buy anything from them? 
what did other budget (and dieting) brides do?