His lawyer, Federico Cecconi, called the verdict, which formally found no crime had been committed, “the fullest acquittal we could achieve”.
The earlier trials took place as Berlusconi still wielded considerable power as premier, raising concern among security officials that he had left himself vulnerable to extortion by hosting young women at his villa.
The 86-year-old three-time former premier is currently head of the third party in Italy’s right-wing governing coalition, whose popularity has shrunk significantly from its heyday to around 6 per cent now, according to polls.
Italian Premier Giorgia Meloni welcomed Wednesday’s verdict, saying it “puts an end to a long judicial affair that had important repercussions on Italian political and institutional life”
Meloni’s administration this week took the step of removing the government as an injured party in the case, to avoid creating an awkward political dynamic in the case of guilty verdicts.
Berlusconi’s defence described the dinner parties, dating from 2010, as elegant soirees; prosecutors said they were sex-fueled gatherings that women were paid to attend and where witnesses described showgirls stripping provocatively for the then-Italian leader.
Both Berlusconi and el-Mahroug, who was 17 at the time, denied ever having sex with each other, and el-Mahroug, now 30, says she never worked as a prostitute.