Possible minor dress situation

I wouldn't worry. Even if he definitely saw it, for a prolonged period of time, it will look totally different once it is altered to fit you, and you're all dressed up with hair, makeup, shoes and accessories. Plus with 6 months to go, he's unlikely to remember much from a glimpse anyway! Rest easy.

Only more reason to not worry about a potential glimpse! This is as much of a problem as you'd like to make it, IMO.

I wouldn't worry about it. It won't look anything like it will look when it's on you, with your hair done, and a gleaming smile. Having a dream dress that you've been looking at for 3 years is special. I've seen your posts with the complicated feelings over your dresses - and I'm so glad that you got the one you love. He won't remember or won't know what he saw. I hope he didn't see anything, so you don't have to stress. But if he did catch a glimpse - ask him to forget. He will. But no matter what, I promise you, he'll be floored when he sees how incredibly beautiful you look on your wedding day. This isn't worth changing your plans, causing more stress, or worrying. Nothing he could have seen will compare. It will still be an extremely special moment when he sees you, and a very special day.