From Harper's Bazaar, 1959- a Ben Zuckerman dress and coat photographed by the great Richard Avedon.
Born in 1923, Richard Avedon was a hugely influential photographer- as stated in the New York Times 'his fashion and portrait photographs helped define America's image of style, beauty and culture for the last half-century'. He died in 2004.
This Zuckerman outfit is probably made of a substantial wool in a pale colour, perhaps cream or pink.
The dress is Empire style, with a belt just below the bust.