This Is OUR Day, Not Our DOG'S Day

My fiance and I are getting married next year. Both of us are pretty mellow about the whole wedding planning and have agreed on almost everything so far about what we want. Expect one thing. We've owned a dog together for the last two years and she's like our kid, at least until we have a real one. I really want our dog to be a part of the ceremony -- I'd like her to go down the aisle with a simple flowered collar and then to sit with my brother while the ceremony goes on. After the ceremony is over, I totally want her to head back home so that we can party like adults. Seriously, she'd be in the wedding venue for, like, 20 minutes, max. My fiance is very, very, very against it. He thinks it's cheesy and that a dog doesn't have any place in a wedding, even ours.