Julia Roberts is causing quite a stir in her family, and indeed the wider wedding world, after refusing to take part in her sister's wedding.

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ETIQUETTE DILEMMAS SOLVED

According to American tabloid The National Enquirer, the Pretty Woman star is refusing to be part of her younger half sister Nancy Mote's wedding because she doesn't approve of the groom-to-be.

The 45-year-old actress was reportedly asked to be a bridesmaid in the upcoming nuptials.

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"Julia doesn't think much of Nancy's husband-to-be," an insider told the National Enquirer. "She's convinced he's sponging off Nancy, who doesn't have much money in the first place. They moved out to L.A from Georgia, and John was working at a Panda Express restaurant. But he quit the job after Nancy landed a gig as a production assistant on Glee."

While part of us can't help but agree with Julia (who could ever doubt Julia?), we do also naturally sympathise with the bride-to-be in the matter...

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What would you do if your sister refused to be your bridesmaid? Leave a comment below or join the conversation on Twitter and Facebook