JESSICA Simpson and fiance Eric Johnson will sign a prenuptial agreement.
The couple - who announced their engagement in November after just six months of dating - have been discussing their options and will agree to a legal deal over their assets before they tie the knot.
A source said: "There will definitely be a prenup. Jessica has said she wants one. Jessica and Eric have talked about it.
"Eric understands that there needs to be a prenup. He's supportive of it."
Singer-and-actress Jessica is said to be worth $750 million and former NFL star Eric wants to show he's not after her money.
The source added to Us Weekly magazine: "He really loves her. He's a low-key guy. He's not into the glitz and materialism of Hollywood at all."
While the couple - who have both been married before - are signing a pre-nuptial agreement, they are planning their future together and want to start a family.
Jessica said: "I definitely see myself having a family with Eric, so that's exciting to think about."
Speaking about her husband-to-be, the blonde beauty gushed: "Every day is a romantic day with him. I'm very blessed."
Jessica was previously married to singer Nick Lachey while Eric's five-year marriage to wife Keri Johnson was officially ended earlier this year.
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