Billionaire Ronald Lauder, of Estee Lauder fame, has sold his $5.256 million Wainscott property to his daughter Aerin Lauder Zinterhofer, senior vice president of the famed cosmetics company her grandmother founded, who married on the property in 1996. The Wainscott residence is one of many Ronald Lauder owns, including spots in East Hampton and Westhampton Beach. The sale was officially completed Oct. 5.