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,
Francisco Costa (designer) enrolled in a language class at Hunter College and took courses at the Fashion Institute of Technology at night. He obtained employment with Herbert Rounick, whose Seventh Avenue (Manhattan) company made dresses for Oscar de la Renta and Bill Blass. Costa went to work for de la Renta after Rounick's death, designing for the firm's Japanese licenses. Costa credits de la Renta with teaching him the most about both designing clothes and life. He remained with the company for five years. Klein's partner, Barry Schwartz, brought Costa's name to Klein's attention in 2001. Costa became the principal designer for the