Liza Minnelli officially filed for divorce from David Gest on Wednesday, a day after her estranged hubby slapped her with a $10 million lawsuit. In a statement, Minnelli called Gest's allegations that she beat him in alcohol-fueled rages "hurtful and without merit," adding that she had "hoped very much that the end of my marriage would be handled with mutual respect and dignity." (I'm tempted to poke fun at Liza's na&#239vet&#233, but I really don't want to get smacked.)