My bridesmaid got engaged about a month after me and made me her MOH. I have already bought my dress, which is relatively unique (I love lace and won't do strapless). Now she started dress shopping and has had terrible luck. She emailed me the other day saying she has found her dream dress and sent me a picture - it is nearly identical to my dress. She hasn't bought it yet and I really don't want her to. Her wedding is 3 weeks before mine and I don't want our weddings to turn into a "who wore it better" joke. I love her dearly and want her to have a dress she loves, I just don't want it to be my dress. I don't know how to approach the situation. Any ideas?