My oldest sister and I havent been the best of friends and some times we just dnt get along and when I got engaged she never said congrats to me or my FI. Even though she never acknowledged me I still asked her to be apart of my wedding. Well she didnt respond so I went ahead with my planning without her. It just so happened my mom and my other sister and I went to look at bridesmaids dresses and my oldest sister tags along. I over hear my mom ask my sister what size she wears and basically adds her to the wedding party without discussing it with me. I know if I dont have noth of my sisters in my wedding my mom will not be happy but I gave my sister the opportunity to be apart of my special day. I am confused and I dont know what to do. I have tried to talk to my mom about it but her excuse was that my oldest was going thru alot of the time of my proposal and thats why she never responded or congratulated me. Any advice wud be great! Thanks