ROME (AP) — Prince William's office says it is reviewing "all proportionate responses" to the planned publication by an Italian gossip magazine of topless photos of William's wife Kate.

Chi, owned by former Premier Silvio Berlusconi, said Saturday it planned to publish a 26-page spread with the photos Monday. The French magazine Closer, also owned by Berlusconi, published the photos Friday and was immediately slapped with a lawsuit by the royal couple alleging privacy violations.

A spokeswoman at St. James Palace, speaking on condition of anonymity in keeping with palace policy, said further publication served no purpose "other than to cause further, entirely unjustifiable upset" to the couple who were relaxing in a private home.