MILAN, ITALY - OCTOBER 02: (FILE PHOTO) Barbara Berlusconi and Veronica Lario Berlusconi attend a meeting on ethics at the Bocconi University on October 2, 2008 in Milan, Italy. Italian Prime Minister Silvio Berlusconi's wife has confirmed on Sunday she will file for divorce. Mrs Berlusconi says she acted after reading media reports of the Italian prime minister apparently attending the 18th birthday party of a woman in Naples.