MODELING legend Carmen Dell'Orefice (above) is going back to work at age 77. The icon, who just spilled the story of her 12-year marriage to late real-estate magnate Norman Levy in Vanity Fair, lost her entire life savings to Levy's confidant, Bernie Madoff, in December. Now luxury marketing firm AgencySacks is giving Dell'Orefice a chance at a comeback. One source told us the agency contracted photographer Roxanne Lowit to shoot the still stunning mannequin in an ad campaign for the Pierre Hotel. -NY Post, PAGE SIX