Oh jeeze, I've heard that is the absolute worst... They always are convinced they are going to lose the weight. My cousins wedding had a bridesmaids that did this. She ordered her dress FOUR SIZES TOO SMALL because she was going to lose the weight. Spoiler: she didn't. Dress came, didn't fit, everyone panics, my cousin is pissed because we all told her not to order a size too small, she finds the same dress at Nordstrom Rack in her size and lucks the fuck out. So annoying.