Losing 100 pounds for wedding

This is crazy I’m writing this but super excited for my health. I am on a program for me to lose 100 pounds by April 2021. I started May 5th 2020 and three ish weeks in I’m already 13 pounds down. I cut out everything bad cold turkey and I’m losing weight like crazy, Which is great!! I feel so much better and starting to look a little better. I am (hopefully) going to get my wedding dress here June 13th. I am wanting to know if anyone has got a wedding dress and set to lose quite a bit of weight afterwords. I’m really nervous to get something too small but I don’t want to get something too big where it’s going to ruin the shape of the dress. I’m working my butt of now to try to get to 20 pounds so it’s not such a stretch. I heard from the lady that’s going to help me getting a dress that 25 pounds lost is a dress size in (wedding dress size) What did you do when you got the dress? Should I order one size or two sizes down since I’m set to be a 14 if I lose the full 100. I’m thinking of ordering a size 16 just in case if I don’t.. I need your experience and advice!! thank you