I didn't start showing until 21 weeks and even then most people didn't even notice until I pointed it out. Plus your breasts will be looking amazing so there's that...
I'm battling the same issue right now. I just find out I'm pregnant and will be 14 weeks on my wedding day. My only hope here is that I don't get big super fast.
I got married at 5months so I had the same worries younhad not so much hiding it but still firing your dress is probably your main concern. My dress fit perfectly and I had a corset top flairrd bottom. It blended it great I think your style dress could possibly do the same I also got the control top panties to kind of flatter my shape and keep it from looking bulky.but at 12 weeks you should be barely showing.
If there's a dress that works with a baby bump it would be the mermaid dress! Plus if it's your first baby you probably won't be much bigger anyway ☺
Congrats on wedding and baby
Im 15 weeks and i still fit in my normal clothes and im a skinny girl so i dnt think it would be a big baby bump but every bodys different just keep yur babysafe
You could always just Blane it on period bloat if no one knows
I don't think there is a safe way of "hiding" a baby bump.