I didn't use any Hidden Mickey's in my gown or in my bridesmaids' gowns; however, I did have Disney Floral use them in our bouquets. Here's a close-up photo that shows this:
click here. I should also note that the ribbon on my bouquet was anchored by a Hidden Mickey.
I thought using Hidden Mickey's in the bouquets was a fun way to incorporate a little bit of Disney magic into my vow renewal.