The image was taken during the royal tour of Australia in April, after a gust of wind blew Kate's skirt up while she walked outdoors.
Kate and husband Prince William had been touring the Blue Mountains in Sydney at the time, with Kate wearing a Diane Von Furstenberg wrap dress that was unfortunately caught by the breeze.
Germany's Bild has published an unpixellated version of the photo in its print edition and online, alongside photographs of Kim and Khloe Kardashian both flaunting their bottoms, as part of a piece on bums that have made the headlines lately.
UK outlets which have run the photo of Kate have pixelated her rear.
Clarence House has so far declined to comment.
This isn't the first time that photographs of Kate published in overseas magazines have caused controversy. Two years ago, pictures of Kate sunbathing topless in France where published by French Closer magazine, prompting the royal couple to take legal action.
And last year, pictures emerged in Italy and Australia of a then-pregnant Kate wearing a bikini in Mustique.
While photographers taking pictures up her skirt is obviously not Kate's fault, perhaps she should ask The Queen for advice on weighing down her skirt for future? Her Majesty is known to use small weights sewn into the hem of frocks to prevent any such wardrobe malfunctions.
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