Butterick 6086 vintage sewing pattern, dated ca late 1970s/ early 1980s.

Young Junior/Teen Blouse & Skirt.

Semi-fitted blouse has sweetheart neckline, front buttoned closing, princess seaming and full-length sleeves gathered at cap and into buttoned cuffs or short sleeves gathered at cap, B and C: have purchased pre-gathered lace trim, Flared skirt six inches below mid-knee or evening length has straight waistband, back zipper and self or contrast hemline ruffle A: has purchased eyelet trim lower hemline ruffle and purchased flat lace trim C: has purchased flat lace trim. 

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 ( blouse cut/ complete, skirts are uncut.) Envelope has some tears at top end.

More children's patterns here:

http://allthepreciousthings.com/collections/baby-and-children