You’re getting married as yourself. It’s not a big deal. As long as your dress fits, you’ll be just fine. Your husband is not marrying the number on the scale, he’s marrying the person you are inside. You’re not his “chubby bride” you are the most beautiful woman he’s ever seen.
Since I was chubby when I got married, I recommend trying your dress on today, just in case anything needs to be taken in or out. I hadn’t lost weight but my body had shifted a little so at the last minute, I had to have a couple of minor modifications made.
This may sound very corny to you… but I promise it will help. Just say a little prayer of thanksgiving for having a man who loves you just the way you are. Repeat: just the way you are. Repeat again: just the way you are. I found a book of meditations some years back that has a prayer beginning “Beloved of God, Greetings…”You too are beloved of God, as we all are. Know that and your slender sisters won’t be quite so enviable. We are all beloved of God. However your wedding will be is how it will be. Now it is too late to make changes. Relax and say thank you and enjoy the fact that you are beloved.
If you want to prepare your wedding, you can check in with a professional wedding association (Association of Bridal Consultants & Association for Wedding Professionals Internationalre). They have members (vendor resources) nationally & Internationally. You can go to their website look up a local consultant anc call them. Many will make a referral for you (often free).
Have you checked out theknot.com yet? They have a checklist of things to help you prepare for your wedding with a timeline. I recommend looking it over. You can remove items that don’t apply and I think add others if they are missing. But it will give you a good idea of everything that should be accomplished by now and what you should be doing this week.