Am I wrong for wanting control over my wedding, for wanting it to feel like me?

I used to hear stories about difficult mothers-in-law who want to decide everything for their sons. Back then, those stories never bothered me because my fiancé didn’t seem like someone who would let his mother ruin his relationship. Everything was going smoothly at first. When I met his mom, she didn’t give off the evil stepmom vibe. We talked about my fiancé as a child, laughed about silly things, and I honestly felt relieved.

But my panic started when I found out she usually handles everything about her children’s weddings. I’ve always had a clear picture of what my wedding would look like, but now she wants to control it her own way. She wants me to wear her wedding gown. I mean… where does that even happen in this time? I’ve always dreamed of a custom gown that actually feels like me.

Then she went ahead and picked the bridesmaids’ dresses herself, ordering them online from Alibaba, including two African bridesmaid dresses for my wedding. I was shocked. They looked beautiful, yes, but I couldn’t help feeling like I was slowly being erased from my own day.

I don’t know if I’m overreacting, but I’m deeply frustrated. I smile around her, so she thinks everything is fine, and that makes it even harder to speak up. I don’t want to be seen as the evil daughter-in-law, but I also don’t want to disappear in my own wedding.

What would you do?