Practically everyone has heard of prenups. Less well known but, ironically, far more common, are postnups or postnuptial agreements.
A postnup can be the functional equivalent of the prenup you didn’t quite get to before the wedding, and can be made the day after the wedding, the week after you return from the honeymoon, or anytime after that.
A postnup can alter a prenup.
A postnup can settle disposition on death or divorce of property you didn’t have before.
A postnup can serve as a divorce settlement agreement.
All in all, a very versatile form of agreement worth knowing about.
And Florida enforces properly made postnups.
Read more in this MS NBC article.