A few years ago, while watching Star Wars, I proclaimed towards the end of the movie, “I have found the perfect wedding gown!”
It was the scene where Queen Amidala was picnicking with Anakin. I was so sure that this was the wedding look for me — gown, hair, makeup, accessories. Yes, even the earmuff thingy:

I realise now that I was probably influenced by the whole setting and art direction of story and of course the beautiful actress, Natalie Portman, and what looks like a good idea on her in a movie may not translate well in real life.
Anyway, I still love watching fantasy, sci-fi and period movies specifically for their costumes. Love the one below (the parade costume), I think it can actually work in a real life wedding, if worn sans the satellite dish at the back?

And of course, the wedding gown. Sigh. Would your groom agree to the padawan’s costume?

I read here that the wedding dress above could be inspired by the Queen Mother’s wedding dress or coronation gown but I don’t quite see the resemblance. Maybe just the way the veil is worn. A picture of Queen Mother, here as a bridesmaid in 1922.

The veil is also worn close to the head which I guess reflect the flapper roaring 20s style of that time.
Star Wars photos by Lucasfilm, Queen Mother photo from daylife