Berlusconi's magazine publishes photos of pregnant 'bikini-clad' Duchess Kate
"This is a clear breach of the couple's right to privacy," the spokesman said.
Meanwhile a palace source said: "It is violating".
The duke and duchess, who are expecting their first child in July, flew to a 19,000 pounds-a-week luxury villa on the island of Mustique last week.
This is not the first time the Italian magazine has created controversy. It had caused outrage when it published a photograph of Princess Diana as she lay dying.
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