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Pippa Middleton's bottom may have been a big story during her sister Kate Middleton's wedding to Prince William, but don't expect her to be balancing champagne glasses on it anytime soon.

In an essay penned to U.K.'s Spectator publication, the Duchess of Cambridge's sister acknowledges that it's been a big year for Kim Kardashian's assets. "No year is complete without a bottom story, and the 'Rear of 2014' award undoubtedly goes to Kim Kardashian, after her posterior exploded all over the internet last month." Pippa, 31, writes.

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Recalling her own bootylicious headlines, she continues, "I must say that mine — though it has enjoyed fleeting fame -- is not comparable."

Pippa then questions the 34-year-old reality star's motives for posing for the full-frontal, butt-baring Paper Magazine photo shoot. "But the Kim butt story did make me pause. What is it with this American booty culture?" she writes. "It seems to me to be a form of obsession. Kim's aim, apparently, was to break the internet, but I'm not sure she's going the right way about it."

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Who do you think has the best booty of 2014?

Is it really Kim Kardashian? After all, Jennifer Lopez and Iggy Azalea did come out with a song called "Booty," and Nicki Minaj's "Anaconda" certainly has lots of shots of her derriere.