''Everybody is covered up in millions of layers, but what we're trying to do is get their clothes off,'' admits costume designer Ane Crabtree. While viewers wait to see more skin, they can ogle the sexy silhouettes
of the '50s period wardrobe and imagine what lies beneath. ''It's scary and overconstructed, five times the power of Spanx,'' Crabtree says of the vintage foundation garments Virginia Johnson (Lizzy Caplan) and Libby Masters (Caitlin Fitzgerald) wear. ''It makes it hard for her to use the bathroom between takes, but it gives her a beautiful bust-to-waist-to-hip ratio.''