And while our initial response is to drool over every inch of their massive rings, only seconds later the focus has shifted to the gown possibilities.
What designer will she pick? Is her style more princess or bohemian? Will she opt for color?
The only thing we do know for sure is that it's going to be a jaw-dropping number worthy of an A-lister. Something even better than the gowns we see at the Oscars.
And just like awards shows, most stars are probably going to get a custom-made gown. But it's still fun to try and guess what dress they might wear down the aisle if they just select from the store.
So we've picked a few frocks straight off the runway from the bridal fall 2014 collections (currently going on in New York City right now) based on the personal styles of six celebs who've recently got engaged.
Did we get it right? You be the judge.