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It looks like Kelly Osbourne's engagement to British model Luke Worrall is causing some drama within her famously fractious family.

A shopper at the Les Habitudes boutique on Robertson Blvd in Los Angeles reports that Osbourne "and three of her gays" came in around 5pm on Wednesday.

"Kelly said she told her mom [Sharon] that she wasn't inviting her sister [Aimee] to the wedding," the spy-witness says. "She said Aimee is being a 'beast' and treating her 'like shit.' She said Aimee told her, 'you're only getting married for the attention.'"

Aimee is the full sister of Jack and Kelly but, showing a reticence not normally associated with the Osbournes, declined to participate on the MTV reality show that made the family international celebrities.

At least Kelly can count on her gays!

"The boys were like, 'She's just jealous,'" says the snitch.