Butterick 5338 Part 1; 1950s; The Weekend Change-About. Part 1 Box-Jacket Suit. Wonderful new idea for a weekend wardrobe: "separates" that team to give you costumes for all your morn to midnight activities. (Part 1) Box-jacket suit (in this pattern envelope). (Part 2 attached envelope) Sleeveless weskit blouse and slim, uncuffed shorts are the coordinated sun-separates. Also see Butterick 5338 Part 2.