Butterick 5376; 1950s; "Quick & Easy" Slip or Petticoat. (A) Flare-skirted slip with low-dipping back and narrow straps; day length. (B) Evening slip version; floor-length. (C) Petticoat for evening wear is floor length. (D) The petticoat in the short, day-length. Featured in Butterick Pattern Book Spring 1951