My soon to be mother in law refused to show me her dress 2 weeks before the wedding and claimed that it was going to be a surprise for the wedding.....Only to find out that her dress is ivory......The same color as my dress! I have told her that I do not feel comfortable with her wearing a dress so close to the color of my dress and even offered to help pay for a new dress! She says that its not the same color & that she doesn't want to look for a new dress 2 weeks before the wedding. My finance (I'm so glad I'm marrying him) took up for me and told her to change the color of her dress, for him. And, she still refuses to do it! What can I do? Or is there anything I can do? Not inviting her to the wedding is not an option......Do you think that other guests will think that she's tacky for doing this?