The snapped images of the Duke and Duchess' private vacation in Mustique allegedly cost as much as $400,000 each, as new photos including Pippa Middleton surface.

Prince William has already expressed his dismay over published photos of his pregnant wife, Catherine, during their Caribbean vacation in Mustique. But it is not stopping media outlets from further publishing the photos snapped by several persistent paparazzis.

Last week, Italian publication, Chi Magazine was the first one to place the photos on their pages, with the headline "Kate & William Honey Moon for Three" in bold letters. Shortly after, many magazines from around the world laid out their interests in obtaining the said images, including Australia's Women Today magazine.

Though the editors of Chi magazine say they do not, in any way, breach any kind of privacy by publishing the photos, spokespersons of the Royal Palace have released a statement regarding the issue.

"We are disappointed that photographs of the Duke and Duchess on a private holiday look likely to be published overseas. This is a clear breach of the couple's right to privacy." says the Palace spokesperson.

According to Vanity Fair, there are new "royal vacation" photos on the market, including ones where Pippa Middleton are shown. There are still no magazines publishing the said images as the breach of privacy is already in question.

Experts suggest that no matter how careful the Royals are, or secure the places they choose to go to, they are still susceptible to getting exposed.

"With the technology that photographers have now, being able to get a shot from so far away, there's probably nowhere in the world nowadays that the royals can go without getting a photograph taken," says Lindsay Green, a high-end travel consultant.

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Kate Middleton's baby bump on the cover of Italy's Chi magazine

Just when Kate Middleton and Prince William thought about some private tropical time in Mustique, the paparazzi has struck again, publishing photos of the Duchess in her bikini with a bulging baby bump.

Italian magazine Chi was the first to publish photos of Kate Middleton bikini-clad on the beach at four months pregnant.

Italian magazine Chi publishes photographs of Kate Middleton's younger sister, Pippa Middleton, hand-in-hand with a mystery man

The Duchess of Cambridge, Kate Middleton

Catherine Middleton