Jessica Simpson is sick of what she claims are "lies" being told about her and her family on the cover of Star magazine. And she is planning to fight back through her lawyers.

Wednesday morning, the magazine hit newsstands with the shocking claim that Simpson's partner, Eric Johnson, cheated on the reality star with his ex-wife.

"The whole thing is ridiculous," a friend of Simpson's tells me. "Eric is the most devoted fiancé and father. There is not an ounce of truth to this. We will be serving them with a legal notice today. We weren't even consulted for a possible comment."

Jessica’s spokesperson had "no comment" about the cover. Representatives from the magazine did not respond to HuffPost's request for comment regarding their cover accusations.

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