My FSIL doesn't really like my fiance and I right now. We picked out our wedding date, and it happened to be the same date she got married to her husband. Before signing the contract I told my FMIL the date we were thinking about picking for the wedding. I was never once told once it was the same date. Her husband left over four years ago, and I wasn't around for any of their anniversaries. She doesn't want to share the day with anyone else, and it has brought drama in our lives. Right after I signed the contract I asked before I continue planning wedding stuff I will be happy to see if I can change the date. She promised it wasn't an issue, and she is fine. Now she is against sharing the date again, and wants to wear a "slutty dress" to the wedding to prove a point. Should we just allow it, and put her in pictures? Or should we put our foot down?? It stresses me out :-(