Kind of a nightmare, actually!
I was at the venue (that wasn't my venue but it was where I wasn't getting married in the dream) and I had my dress on but it wasn't altered at all! It still had the high collar and the puffy sleeve that it has now. And my hair was still the same color (I'm going dirty blonde for the wedding, currently a light-ish brown with brown-ish orange at the ends) but like 4 inches shorter and I was freaking out!! And then I realized I didn't have any table decor and it was the morning of my wedding!!!!! And also the cast of Pretty Little Liars were my bridesmaids so that's when I knew I was dreaming