Saturday's reports say some of the photos were taken during last New Year's vacation. Among those at the villa was a woman the heart of an alleged scandal.
Berlusconi has denied anything "spicy" in his relationship with the 18-year-old. His wife, Veronica Lario, cited what she called her 72-year-old husband's flirtations with young women when she announced this month she wanted a divorce.
The prime minister's lawyer was not immediately available for comment.
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