January says playing Betty has given her a greater appreciation of being a woman in the 21st century. "There's so many things we take for granted now," she says. "The biggest thing for me was just understanding the lack of choices that a woman had back then. … You went to college to find a husband. Then, you went home."
On set, January says the wardrobe, chosen by costume designer Janie Bryant, helps her get into character. The actresses wear pillbox hats and pleated dresses, as well as restrictive undergarments and girdles. "I walk differently. I stand differently. You hold yourself differently. It kind of forces a certain posture," January says. "It's a bit of a cheat as an actress to go on set and already feel strange and have, like, rocket tips."