Lauren Santo Domingo and husband Andres are expecting their second child, Page Six can reveal. Lauren, a Vogue contributing editor, fashion consultant and founder of luxury shopping Web site Moda Operandi, is due to give birth in October. Sources tell us the couple, who already have a 1-year-old son, Nicolas, are “very excited and consider this a very special time.” When contacted by e-mail last night, Lauren declined to comment.