Inside there are another 15 pictures, some showing the couple in the water, as they relaxed on North Island in the Indian Ocean.
The headline on the front 'Our island paradise' wrongly appears to suggest the couple approved the publication.
In the main photo Kate's bronzed, taut stomach is clearly on display in a tiny black halter-neck bikini with gold detail, while search-and-rescue pilot William is seen in a bright pair of board shorts.
The unknown photographer, who appears to have used a long lens, seems to have escaped the eagle eye of the coastguard who reportedly patrolled the beach to protect the couple's privacy.
Prince William, 30, and Kate Middleton, 30, married on April 29 last year.
The Duke and Duchess of Cambridge jetted off on a 10-day romantic break to the Seychelles
