The much-celebrated Picasso biographer and art-world personage Sir John Richardson, K.B.E., F.B.A., who passed away last year at age 95, was noted for his pointed wit (he nicknamed the pretentious Park Avenue socialite Lee Copley Thaw “Lee Thal”); his heightened sense of style (hunter green and burgundy velvet dinner jackets, shed after midnight for his Meatpacking District leather gear); and his smooth English good looks, which he never really lost.

“He was the world’s most amusing naughty person,” says his close friend Annette de la Renta, a longtime trustee of the Metropolitan Museum of Art and widow of the fashion designer Oscar de la Renta. “I loved him dearly. But he was bad.”