I just ordered a dress online that I like, but I'm not sure which size I am. The dress is on sale, so if I do an exchange later for the other size, will I get the sale price still or would I get the price that it is at that point? Does anyone have personal experience with this? I'm debating whether I should just order 2 sizes knowing I'll return one. Has anyone returned a dress they bought online at Davids Bridal?