Butterick 6131 vintage sewing pattern, dated ca early 1980s.
Young Junior/Teens' Top, Pants and Shorts:
Loose-fitting top with pointed collar or self-lined hood has front neckline slit, purchased drawstring hemline, self or contrast short, raglan sleeves with narrow band at lower edge or full-length, raglan sleeves elasticized at wrists and topstitch trim. Straight-legged pants and shorts have elasticized waistline.
***Sized for stretch knits only.
Size 11/12:
Bust: 32 inches / 81 cm
Waist 25 inches / 64 cm
Hip 35 inches / 89 cm
Pattern is partly cut and checked complete ( shorts are cut/ complete, remaining garments are uncut. Envelope has paper tanning and spotting, small tears at opening, and a store stamp on the front.
More children's patterns here:
http://allthepreciousthings.com/collections/baby-and-children