Jessica Simpson is being sued by a man, who claims she made it appear that his baby was her own.

Christopher Hurst has accused the Fashion Star mentor, who is set to give birth to her second child next month with her fiance Eric Johnson, of conspiring with OK! magazine to make money by posing for a photo with his son, which later appeared on the front cover of the publication.

According to court documents, obtained by The Times-Picayune in New Orleans, Christopher took his teenager daughter and baby boy to meet Jessica, 32, at a department store in October 2011, when the singer was pregnant with her daughter, Maxwell. The lawsuit claims that a stranger suggested that he let Jessica hold his son and Chris claims a photographer then came out of nowhere and started snapping pictures of the blonde beauty holding the infant. He says he was stunned when the images appeared on the front cover of OK! with headlines that made it appear his son was Jessica's child.

The lawsuit accuses Jessica of greedily being in on the plot, claiming she had a deal with a rival magazine to sell the first pictures of her daughter for $800,000, but hatched a plot with OK! to make more money by posing with a baby that wasn't even hers. Chris is suing the singer, the magazine and Getty images for damages in excess of $75,000, according to gossip website TMZ.com.

Jessica has yet to comment on the allegations.