Prince William's wife Catherine on Saturday faced growing embarrassment over topless photos after an Italian magazine said it would follow its French sister publication in printing them.

The British royals launched legal action on Friday against French magazine Closer -- which is part of the media empire of former Italian prime minister Silvio Berlusconi -- after it published paparazzi snaps of Catherine sunbathing with her husband.

The royal family may have hoped to contain the scandal by swiftly suing Closer -- but Chi, an Italian weekly also published by Berlusconi's Mondadori Group, announced late Friday that it plans to print a special issue on Monday devoting 26 pages to the candid pictures of the former Kate Middleton.

The pictures were taken while she was on holiday with her husband, the second-in-line to the British throne, in France this month.

Closer's editor Laurence Pieau was quoted by British tabloid The Sun on Saturday as saying her magazine had more pictures that it had not printed yet.

'Intimate pictures exist that we haven't published and will not publish,' she told the newspaper. 'Probably other newspapers will choose to publish them.'

A version of the front cover of Chi showed some of the photos with the headline 'The Queen is Naked!'

'The fact that these are the future rulers of England makes the a.