Simplicity 5858 vintage sewing pattern, dated 1983.

Girls' Sundress and Unlined Jacket:

Sundress with skirt stitched to bodice at waistline has back elastic casing, front band, tie ends, shoulder straps and contrasting bodice. V. 1 also has contrasting skirt band and braid trim. V. 2 has lace trim. Jacket V. 1 & 2 has front button closing, sailor collar, short set-in sleeves gathered to armholes, ribbon tie. V. 1 has braid trim. V. 2 has lace trim and contrasting collar.

Size 10:

Chest:  28 1/2 inches/ 73 cm.

Pattern is uncut and factory folded. Envelope has wear and tear to corners and flap.

More kids patterns here:

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