Simplicity 6121 @1974 vintage sewing pattern;

Child's Dress or Top and Bell-Bottom Pants:

The top V. 1 and 3 or dress V. 2 with front yoke have notched collar, front button or snap fastened closing and optional top-stitching trim. V. 1 and 2 with contrasting yoke has long set-in sleeves gathered to contrasting sleeve bands. V. 3 with short set-in sleeves and turn back cuffs has self fabric tie belt. The top-stitched bell-bottom pants V. 1 and 3 have elastic waistline casing in back and waistband in front.

Size    4:

Chest: 23 inches / 58 cm

Pattern is cut and checked complete. Envelope is in good vintage condition, with some shelf wear.

More children's patterns here:

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