With a net worth of around $250M, Justin Bieber's team have advised him to protect his assets with a prenup.
Baldwin, herself, is said to be worth around $2m.
A source has told TMZ that the pair have, in fact, lawyered up and will not get married until a prenup is signed.
A source has also said that regardless of their religious views, they have both agreed a prenup would be sensible.
Prenup or no prenup, it's clear these two are crazy about each other.
The star was spotted serenading Baldwin and a crowd of people on the streets of London just this week. Check out those pictures here.