Kate Middleton has again become the center of everyone's attention after German newspaper Bild published a photo of her bare bottom when the wind blew up her dress. The said photo is now being circulated online.

The Duchess and Prince William were coming down from a helicopter during their visit to the Blue Mountains in Australia when the breeze whipped up her blue-and-white dress. A photographer took advantage of the moment and snapped a photo of Kate's exposed bottom, according to Parade.

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In 2011, a similar incident happened and Kate was photographed with her yellow dress blowing up while she was disembarking from a helicopter in Canada.

The Bild article described the photo as one showing their "favourite" 32-year-old Duchess Kate in the Blue Mountains. The tabloid went on to say that the rotor blades from the copter stirred the air in such a way that Kate's dress blew up and gave them an eyeful of her "beautiful bum."

A few days ago, rumors about the existence of the said photos circulated and that they were being auctioned around. The Buckingham Palace back then stayed mum on the issue.

The photos were supposedly being shopped to UK news agencies, but no British publication would have them. So, Bild got the snaps instead.

In the past few years, several incidents have raised the question of the Duchess' right to live a private life. Those incidents include the publishing of her topless photos during a vacation in France.

In connection to the topless snaps, the royal couple issued a statement comparing the incident to the late Princess Diana's struggle with the excessive paparazzi following. Kate and William later on filed a legal complaint against the French publication Closer over the topless photos.

Last year, Italian and Australian news firms published photos of the pregnant Duchess in a bikini.

This month, the Duchess' privacy has been brought up in the news, together with the ongoing trial to determine the guilt of the British publication News of the World in a phone-hacking case. It has been reported that Kate's mobile phone was hacked 155 times from 2005 to 2006.

Both Prince William and Prince Harry's phones were also reportedly hacked.