Kate Middleton is being urged to take an active role in lobbying one of her favorite design houses, Zara, following allegations of horrific slave labor-like conditions in facilities where its clothes are manufactured.

The company has been rocked by the deaths last month of two workers in a Bangladeshi factory which supplies the Spanish chain.

The Duchess of Cambridge has often been seen shopping in the chain’s stores, and has worn two of its outfits on public occasions since becoming the wife of Prince William.

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One was the $75 cornflower blue dress she wore the day after her wedding, seen when she and William departed Buckingham Palace by helicopter. The other was a short nude and black lace tulip dress she wore to a charity event shortly before Christmas.

The two workers who died in December were both caught up in a stampede of personnel trying to escape a factory after a boiler explosion.

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Greg Muttitt, of the UK charity War on Want, pulled no punches in demanding that Kate take a position on the tragedy. "Kate has been a public ambassador for the Zara brand. In contrast, she has shown no interest in the lives and conditions of the workers who make Zara’s clothes," he said.

"‘Following this tragedy, a people’s princess would insist that Zara fairly compensates the bereaved families and call on the British government to enact legislation to protect overseas workers for UK retailers."

Kate isn't the only famous face to become embroiled in the scandal of sweatshop conditions in foreign clothing factories.

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As RadarOnline.com has reported, Kim Kardashian is under fire for manufacturing some of her lines in China, famous for the deplorable wages it pays children who work in clothing factories.

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Just a day after tweeting photos of herself in a sexy black bra with an open pajama top, Kim Kardashian turned to much more demure fashion for her family's annual Christmas party.

The reality queen wore a long-sleeve, full length gray dress for some of the shots, and long-sleeved, buttoned-up PJs for others.

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Mom Kris Jenner and stepdad Bruce Jenner hosted the annual party.  Kourtney Kardashian, her baby daddy Scott Disick, and their son Mason, were all there.  So were Dancing with the Stars alum Rob Kardashian, and Kylie and Kendall Jenner.

Missing for the first time was Khloe Kardashian, who was in Dallas with her husband Lamar Odom for the opening of the NBA season. He's now playing for the Dallas Mavericks.

There was good news and bad news for celebs looking for huge money appearance fees for New Year's Eve in Las Vegas.

The big winner is Kim Kardashian currently embroiled in a scandal about sweatshop conditions at the Chinese factories that manufacture some of her clothing lines.  The former Mrs. Kris Humphries is being paid an estimated $600,000 to appear at Tao. The fee is part of a large, multi-event deal.

Kim's rep has denied the estimated amount but refused to disclose how much she will be earning.

Also in Las Vegas, Black Eyed Pea Fergie is earning about $100,000 for playing the new 1Oak at the Mirage Hotel and Casino, reports The New York Post.

Ashton Kutcher had several big money offers but turned them all down.

Katy Perry, a source tells The Post, was asking $250,000 to appear but not perform at a club.  So far, have not been any takers.

P. Diddy was in talks to perform at the opening of Hyde in Vegas but the deal wasn't to his liking.  Instead, he's throwing a private bash at his Miami home.

And new mom Mariah Carey's people had been shopping an appearance that would include a few songs, anywhere in the world, for $500,000.  Nothing was forthcoming, The Post reports, and her rep says,  “She’s not doing any New Year events. She’ll be in Aspen with her family.”

Other reality stars including Kourtney Kardashian and her baby daddy Scott Disick, and several members of the Jersey Shore are also making Vegas appearances.