British royals have filed lawsuit against French magazine over topless photos of Prince William's wife Kate.

The Royals are said to be furious after photos of Prince William's wife sunbathing topless have been published in a French magazine.
   
Officials say William and Kate are ``saddened'' by the use of the photos,
   
The revealing pictures appear in ``Closer'', a popular gossip magazine.
   
The publication claims they were taken on a guesthouse terrace in France where the couple vacationed earlier this month.
   
Buckingham Palace calls it a ``grotesque and totally unjustifiable'' invasion of privacy.