Singer-actress Jessica Simpson is reportedly terrified that her divorced parents will get into a fight at her wedding and cause a scene.

The 33-year-old is set to marry fiance Eric Johnson in Santa Barbara, California, next month but is worried her father, Joe Simpson, and mother, Tina Simpson, who divorced last year after 34 years of marriage, will ruin her special day as they're barely on speaking terms, reports contactmusic.com.

"Jessica's so worried that they'll cause a scene. She feels like everywhere she turns, someone or something is conspiring against her. She's a total wreck right now,` said a source.

However, the former NFL star Eric is desperate for his future wife to relax and enjoy the festivities.

"He tells her to relax, but she's scared her wedding will be a train wreck. She just can't deal with it anymore. She's waited so long to officially call Eric her husband. She just wants her wedding day to be perfect,` said a source.