Last-Minute Wedding Drama for Jessica Simpson! See Why Sister Ashlee Refuses to Be a Bridesmaid

Jessica Simpson's wedding day is fast approaching, but she can forget about relaxing and enjoying the ride. A source close to the family says a series of nasty fights is turning a joyous celebration into a family fiasco. "It’s supposed to be the happiest day of Jessica’s life," the source says, "but all the drama is making it a nightmare."

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When Jess finally makes it to the altar on July Fourth weekend in Santa Barbara, she’ll swap vows with former NFL player Eric Johnson, 34—but no one knows who will walk her down the aisle! Mom Tina thinks her ex, Joe, is a disgrace as a dad and told Jessica that she wants to walk her down the aisle. "Joe was furious," says the source. "And Jessica is stuck in the middle."

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Jessica, 33, is also trying to smooth things over with little sister Ashlee, 29. When Jess chose her best friend, CaCee Cobb, as maid of honor, leaving Ashlee to settle for the standard bridesmaid title, "Ash refused to be in the wedding at all," says the source, who adds that everyone expects the younger sister to reconsider once she calms down.

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Even Jess’ amazing weight loss has caused headaches: At Jessica’s final fitting, her dress was two sizes too big! "They can alter it," says the source. "But she has to stop losing weight!" With all the stress turning her dream wedding into a disaster, Jessica will be glad when it’s over, says the source: "The pressure has really taken a toll."

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What do you think of Jessica's predicament? How should she handle these issues? Tell us in the comments below or tweet us @OKMagazine.