Simplicity 8946 vintage sewing pattern, dated 1970.

Girls' Jiffy Jumper or Tunic and Pants:

The collarless and sleeveless jumper or tunic with low round neckline and back zipper closing may be trimmed with chain and button closings, buttons or buckles. The pants without side seams have elastic waistline casing.

Girls' size 8:

Breast     27 Inches / 69 cm

Waist      23 1/2 inches / 59 cm

Hip          28 inches / 71 cm

Pattern is partly cut and checked complete, instructions included. Pattern envelope is in very good vintage condition. 

More children's patterns here:

https://allthepreciousthings.com.au/collections/baby-and-children