Marvel's Agent Carter begins tonight, and I wrote this Daily Dot article to coincide with the first episode. It's a spoiler-free background for Peggy Carter's costumes, and why the show is set during such an interesting period in fashion history.
Set in 1946, Agent Carter's seven-part espionage story is rooted in postwar culture. And like the first Captain America movie, one of its defining features is its 1940s aesthetic, immediately setting it apart from Marvel's other TV show, Agents of S.H.I.E.L.D.
The biggest influence on Western fashion in 1946 was, obviously, World War II. Fabric rationing led to a trend for simpler clothes, and women's fashions suddenly became more practical due to the influx of women joining the workforce—like Peggy Carter, whose career began in the Strategic Scientific Reserve during the war. These factors added up to women wearing low heels and plain, knee-length skirts without pleats or frills, and men wearing suits without cuffs or flaps on the pockets.
Agent Carter takes place during a dynamic period in fashion history, the transition from wartime austerity to the postwar styles that would define the 1950s. By 1947 the French fashion industry was up and running again, and Christian Dior introduced the so-called "New Look" of nipped-in waists and flouncy calf-length skirts.