Oscar de la Renta married Annette Engelhard (born 1939), daughter of Fritz Mannheimer and his wife Jane née Reiss, and adoptive daughter of her mother's second husband, Charles W. Engelhard, Jr. De la Renta had stepchildren from both marriages. His son-in-law Alex Bolen currently operates as Chief Executive Officer, and stepdaughter Eliza Bolen serves as Vice President of Licensing at Oscar de la Renta, LLC. De la Renta was regarded as an unofficial ambassador of the Dominican Republic, his home country, and held a diplomatic passport. He had homes there in Casa de Campo and Punta Cana, in addition to his residence in Kent,
Oscar de la Renta seventy-five locations. De la Renta's ready-to-wear designs are available in his retail stores, online, and with select wholesale partners worldwide. In 2014, the George W. Bush Presidential Center hosted an exhibit entitled "Oscar de la Renta: Five Decades of Style" which shared the designer's creations for Mrs. Bush and America's First Ladies. In 1977, de la Renta launched his fragrance, "OSCAR", followed by an accessories line in 2001 and a homewares line in 2002. The new business venture included 100 home furnishings for Century Furniture featuring dining tables, upholstered chairs, and couches. In 2004, he added a less expensive line