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Former Italian Prime Minister Silvio Berlusconi made a rare appearance at his trial in Milan, claiming movie star George Clooney can help him prove he did not have sex with an underage showgirl.

Berlusconi, a 76-year-old media mogul known for hosting infamous "bunga bunga" parties that are allegedly lavish orgies, is accused of paying a Moroccan showgirl, known as "Ruby the Heart Stealer" for sex more than a dozen times when she was underage.

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Ruby claims she saw Clooney and and his ex-girlfriend, Elisabetta Canalis, at one of the bashes however Clooney has denied ever partying with the former prime minister.

"I spoke to their people and said, 'I will come and testify if you'd like,' because I wasn't at the party that I was said to have been at. I wasn't at his 'bunga bunga' party," Clooney told Time Magazine last year.

Berlusconi admitted he gave Ruby nearly $80,000, but said it was for a beauty salon she planned to open.

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Berlusconi is also accused of abusing his power after he allegedly got Ruby released from jail in 2010, claiming she was the Egyptian president's niece.

"To have a big movie star come from Hollywood all the way to Italy to testify on your behalf, I mean that's credibility for you," said legal analyst Jean Casarez. "It also could give some respect to the defense itself."

ABC News' Tanya Rivero contributed to this report