Hi, I've only been on SS for 3 weeks, so can't really answer your question, but I know exactly how you feel. There are friends I haven't seen for a while that I really want to catch up with but keep putting off as I don't want them to think about how I look. BUT, I think you should wait until a couple of weeks before and go and find something nice to wear. It doesn't matter what you weigh, make sure you find something that suits your body shape and makes you feel good. You can't change what people think, but they are people that know and care about you at the wedding, and they will be glad that you are there to celebrate their day