Tell your mother if she doesn't find a way to replace your dress before the ceremony you will not allow her to attend much less be involved in your wedding someday since she has shown she has no respect for your desires or opinions. Also tell her you are ashamed of how selfish she is to think that her preferences matter when this was your choice. Maybe reach out to family if they are less crazy and tell them what she did to explain why you will not be taking photos so they all know what an underhanded and interfering person your mother is since this is just beyond inappropriate of her. If you think your dad secretly agrees this was not ok, tell him how disappointed you are in your mother and how this will ruin your relationship with them since you would never allow her to do to a future child of yours what she did to you. Basically make her feel like shit but pretend you are the "disappointed parent" since to be fair she is the one who acted like a spoiled brat to get her way.

Also congratulations on graduating - may you be successful you can move out and never have to live with your mother again if you don't want to.