What should women in power wear, and why do shows get their style wrong?

From 'The Diplomat' to other political dramas, power dressing remains a cautious art. Photo: Handout

There is a scene in the second season of The Diplomat, Netflix’s smart geopolitical soap opera, in which the US vice president, played by Allison Janney, lectures the US ambassador to Britain (and would-be veep), played by Keri Russell, about her clothes.

“It’s a visual world,” Janney’s character says.