Very Easy Vogue 9371 vintage sewing pattern, circa 1975. 

Misses' Evening Top and Skirt.

Very loose fitting-top has elasticized neckline and full, full-length sleeves with elasticized wrists. Self tie belt holds in fullness at waistline. Slightly flared, evening length skirt has elasticized waistline and pockets in side seams. Topstitching. 

Size   12: 

Bust   34 inches / 87 cm

Waist  26 1/2 inches / 67 cm

Hip      36 inches / 92 cm

Pattern is cut and checked complete. Envelope has some paper tanning, wear around opening, handwriting on the front.

More '70s patterns here:

https://allthepreciousthings.com/collections/1970s