This is a Ben Zuckerman ensemble, consisting of a sleeveless sheath-style dress, knee length and fitted. The matching jacket is double breasted with very large lapels and collar and decorative, vaguely military buttons.
This outfit dates from the late 1960's, and was Ben Zuckerman's interpretation of the Youthquake styles of that time. The dress length is shorter than Zuckerman's of previous years, making this outfit perfect for the older customer who wanted to be fashionable without exposing too much flesh.
Photos courtesy of Atomic Century.

From the mid 1950's, a Ben Zuckerman suit, left and a Bruno Original suit, right.

'Trim suit, modern as a Stratocaster, are the first choice for the travel-wise woman for speedy trips.

Left, a miron-corded striped worsted, a fabric that sheds wrinkles easily, has a straight, slim skirt,  rounded hipline and wide lapels. Right, another wrinkle-defying suit in Forstmann's tweed that has a belted back, rounded hip and slightly full, gored skirt.'

Here is a gorgeous Ben Zuckerman cocktail ensemble in black burnout velvet. The dress is sleeveless and very fitted and is topped by a single breasted jacket with jet buttons.
Photos courtesy of Buffalo Gal Vintage.

From the mid to late 1950's-
'Easily the most intriguing woman in town, in Ben Zuckerman's superb taupe ottoman suit-dress, scarfed in softest blue.'