Prince William and Kate on the cover of Chi Magazine.

Prince William and Kate on the cover of Chi Magazine.

A pregnant Kate Middleton can be seen walking hand-in-hand with Prince William on the beach on the exclusive island of Mustique in new photos taken by a secretive paparazzi while the royal couple is on vacation there with close family members.

Italian magazine Chi, which printed topless photos of the duchess last year, has published the photos and more from their island “babymoon” getaway. The magazine hits newsstands tomorrow (Feb. 13).

But photos have already gone viral and have been obtained by TheImproper.

The Palace is strenuously protesting what it calls a “clear breach” of privacy, although it’s unknown at the moment whether it plans to take formal action.

Kate Middleton Mustique Bikini Photos

Kate Middleton Bikini Baby Bump Photos Go Viral (see!) 1Kate Middleton Bikini Baby Bump Photos Go Viral (see!) 2

Kate Middleton Topless Photos Published

Kate Middleton Bikini Baby Bump Photos Go Viral (see!) 3

Kate Middleton is caught in a royal uproar over topless photos of her published in France. They follow publication of nude photos of Prince Harry partying in Las Vegas. Click the photo to see (nsfw).

Kate appears on Chi’s cover in a bright blue bikini with a pronounced baby bump. Judging from the point-of-view of the photo, it may have been taken from a boat offshore. Mustique is an exclusive getaway and prides itself on providing celebrities shelter from hordes of paparazzi.

Last summer a photographer was able to take pictures of the future English queen topless while she and William were vacationing in Provence, France at Chateau D’Aulet, a sprawling estate owned by Lord Linley, the Queen’s nephew.

While no English publication ran the photos, the appeared in numerous European magazines and went viral on the Internet. The same is true this time around. English tabloids are running photos of the magazine with the Kate and William photos blacked out.

Other members of the family, including sister Pippa Middleton were also photographed, according to reports out of London. Kate and William were on a “babymoon,” perhaps the last vacation before their child is born.

Check out the photos above and follow TheImproper on Twitter to keep up with this breaking news story.