Pippa Middleton: The UK's Kim Kardashian?

Being a solid editorial contributor isn't an easy job. And from the looks of it, Pippa Middleton may have bitten off a lot more than she could chew.

As the new contributing editor at Vanity Fair, Pippa's work has fallen short of expectations. And her role as a food columnist for the British food chain Waitrose has caused mild uproar, as Pippa's column in Waitrose Kitchen replaced the well loved column by famed British cook Delia Smith.

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But where Delia is a cook, many claim that Pippa is not.

The New York Times quotes royal commentator William Hanson as saying "Replacing Delia with Pippa is like replacing Her Majesty the Queen with Kim Kardashian."

Pippa first rose to fame at the wedding of her sister, Kate Middleton, the Duchess of Cambridge. Her claim to fame wasn't her cooking. Or her writing.

It was her derriere, which even got its own Facebook page. Since then, Pippa's been paparazzi fodder, followed everywhere by cameras, her every move documented in tabloids.

But is her star waning? If her most recent Vanity Fair article on Wimbledon was any indication, her day in the sun could come to an end. Hanson called her piece "a 4-year-old's guide to Wimbledon," writes The New York Times.

And her book was no huge success either. Criticized for being too basic, “Celebrate: A Year of Festivities for Families and Friends" was a flop. It came with tips on making tea, such as "Tea bags should go in the teapot." The book has sparked a Pippa parody on Twitter, with the hashtag #PippaTips, painting Pippa as less of a royal and more of an airhead.

As for her journalistic talents, despite some sour reviews, her publishers claim that sales are soaring. And why wouldn't they, after all, the public loves a celebrity, don't they?