As the UK’s first female prime minister, Thatcher could be excused for conforming with her male peers and drawing as little attention to her gender as possible. But the so-called Iron Lady understood that politics is a careful dance between soft and hard power — and that clothes were tools that could cushion (even if only visually) the more abrasive sides of an 11-year term defined by conflict with trade unions, domestic power struggles and the Falklands war.

Enter the pussy-bow.

Margaret Thatcher

Former British prime minister Margaret Thatcher was a longtime fan of the pussy-bow. (Tim Graham/Getty Images)