My future mother in law is extremely wealthy. She lives in Saudi Arabia where weddings are a good excuse for women to get together and show off their lavish dresses (since they are covered the majority of the time).
We were shopping recently and she asked me what I thought of this beautiful, beaded and slinky gown. I told her I loved it and asked her for what occaison... she replied, "For the wedding!". She didn't buy the dress, but I am afraid that she will show up to the wedding in a showstopper. I am slightly concerned that she might inadvertantly upstage me, but seriously concerned that she will make my mother feel as if her more reasonable dress is not good enough. I don't want my mother to have her feelings hurt.
Is there anything I can do to prevent my FMIL from choosing an inappropriate dress? Is it even my place to be concerned about her choice of outfit? I have expressed my concern to my fiance, and he assured me that she would choose an appropriate dress (although he has never been to an American wedding before, and he may not know that what is "appropriate" in Saudi may not be so in the US).
Any advice?