Mr. Berlusconi, 75, is accused of having sexual relations with belly dancer Karima El Mahroug at one of the evenings he hosted at his lavish villa and at the time she was just 17 years old.
Miss El Mahroug was one of 33 women who attended the parties and at which it is claimed - among other things - that they dressed as nuns and police officers to perform seductive pole dances and stripteases.

It has now emerged Mr Berlusconi was named in this year's State Department's Trafficking in Persons 2011 report which details the parties and describes how one of the guests was a minor.
"In February 2011, judges set a trial date for Prime Minister Silvio Berlusconi for the alleged commercial sexual exploitation of a Moroccan child, media reports include indicate evidence of third party involvement in the case, indicating the girl was a victim of trafficking," the report said.
It goes on to say about him: "During the reporting period, the country's (Italy) prime minister was investigated for facilitating child prostitution."

Prosecutors in Milan have charged three of Berlusconi's closest friends with procuring prostitutes for his parties and this relates to presence of Miss El Mahroug - who calls herself Ruby the Heartstealer - at the parties which were held at his lavish villa at Arcore near Milan.

The three are Emilio Fede, 80, a news presenter on one of Berlusconi's main TV channels, showbusiness agent Lele Mora, 55, and Anglo-Italian dental hygenist turned regional politician Nicole Minetti, 26, who was also said to have performed a stripteases for him.

The State Department report is put together every year and draws from reports from 180 countries across the world as well as non governmental organizations who help compile case histories and investigations which are detailed in the document.