So, I have this cousin and we are on decent terms, but she also has made semi-crude jokes throughout most of my life about wearing a white dress to my wedding and has sent multiple texts of literal wedding dresses and says she will wear them to my wedding if I'm not careful. I would generally not have invited her, but my family would be mad at me and insist she come. And she wore an almost identical white dress to my older sister's wedding which really pissed her off. I'd try to ignore it if it happens, but I want to prevent it because it's not ideal and I'm already stressed with all of the wedding planning. What should I do?