Royal Family

Picture of Kate Middleton’s bare bottom posted online

Royalists are up in arms after a German tabloid exposed photos of the Duchess of Cambridge’s naked bottom.

Bild.de published a picture taken as Kate’s dress blew upwards after she hopped off a helicopter with Prince William in the Blue Mountains in Australia during the royal tour in April.

The publication described the pics as “Photos show our favorite Duchess Kate, 32, in the Australian Blue Mountains. The rotor blades of the royal helicopter swirl the air so that Kate’s summer dress blew up — giving a clear view of her beautiful bum!”

The picture is revealing — and it is not clear whether the royal has underwear.

British magazines and newspapers refused to publish them, so they were sold overseas in a frantic bidding war, selling for an unknown price.

Kate and William have faced numerous battles to protect their privacy by preventing the publication of photographs.

The most famous case was when topless pictures of Kate, taken on their holiday at a Provence chateau, appeared in a French magazine in 2012.

The photographs have sparked online debates about why Kate doesn’t wear weights in her hems like the Queen to avoid future wardrobe mishaps.

The royals have yet to comment on the pictures.

William and Kate pose near the Three Sisters on the day the pics were snapped.Getty Images

It’s not the first time a Middleton derriere has caused a stir. Kate’s younger sister, Pippa, was branded “her royal hotness” after parading her shapely assets in a figure-hugging bridesmaid’s dress during Kate’s wedding to William in 2011.

This article first appeared on news.com.au.