The British Royal family has decided to sue for invasion of privacy the French magazine Closer, Mondadori Publishing Group's controlled by Silvio Berlusconi, who has posted pictures of topless wife of Prince William, Kate Middleton.

The Duchess of Cambridge was picked up during a holiday on the French Riviera while removing the above piece of a bikini and images spread by Closer made a moment around the world.

"The Royal family confirms that the Duke and Duchess of Cambridge started today in France a legal action for violation of privacy against the Publisher of Closer Magazine France," announced a press release.

The Court of Nanterre, near Paris, said the Royal couple's lawyer has already presented the first documents to begin the proceedings and that the Publisher will be heard Monday.

Chairman of Mondadori is Berlusconi's daughter Marina.

Legal sources explain that the role of the defense is going to be difficult, but that the proceeds from the sales of the newspaper will be significantly higher than the eventual compensation that can be estimated in the order of several thousand euros.