Nina graduated from Miss Porter’s School in Farmington, Conn., and attended Barnard College in Manhattan, where she majored in psychology.
Among her other jobs, she was a consultant to Revlon, the cosmetics company.
She is survived by her husband, Leonel Alfredo Piraino, a real estate investor and broker whom she married in 2007; a daughter, Lily Elizabeth Baker, from her marriage to Dr. Daniel C. Baker, which ended in divorce. An earlier marriage, to Lloyd P. Griscom Jr., a businessman whose family had been among the first investors in IBM, also ended in divorce.
Friends described the designer Bill Blass as a father figure to Ms. Griscom, who could turn heads at society balls billboarding the latest claret-colored fashion by Blass, embroidered gold by Vera Wang or silver-and-black by Arnold Scaasi.
‘’You know who’s so good at that throwaway thing is Nina Griscom,” Craig Natiello, a designer for Halston, said in 2000, adding, “She always looks like she just came out of the pool, put on that great dress and looks fantastic.”
Ms. Griscom venerated the Roaring Twenties and lamented the loss since then of manners and elegance. “I don’t see anybody entertaining nicely at home,” she said in an interview for the GiGi line of handbags. “I haven’t seen a thank-you-note in a long time. It’s very serious and ponderous and vulgar.”
She also bemoaned the fettle of her daughter’s generation. “I don’t think they have as much fun or are as adventuresome as we were,” she said.
Her glamorous adventures, romantic and otherwise, were fodder for gossip columnists, but rarely surprised her friends.
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