Jessica Simpson is going to protect her $1 billion dollar fashion empire at all costs!

A close source tells US Magazine that Simpson and her fiance Eric Johnson will be signing a prenuptial agreement.

“There will definitely be a prenup. Jessica has said she wants one. Jessica and Eric have talked about it.”

The source also revealed that Eric is fully supportive of the prenup and isn’t the money greedy type, contrary to tabloid reports.

“[Eric] understands that there needs to be a prenup. He’s supportive of it. He really loves her. He’s a low key guy. He’s not into the glitz and materialism of Hollywood at all.”

Smart move Jess…

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