Simplicity 5688 vintage sewing pattern; ©1973. 

Misses' Halter-Jumpsuit and Short Skirt - (Approximate Length of Short Skirt is 16 1/2"):

The top-stitched halter-jumpsuit with front band button closing and collar may be worn with or without self-fabric tie belt. The top-stitched short skirt with front button closing has waistband, patch pockets and purchased belt slipped thru self-fabric carriers. 

Bust    36 inches / 92 cm

Waist  28 inches / 71 cm

Hip     38 inches / 97 cm

Pattern is partly cut and checked complete. Envelope is in very good vintage condition, with a store stamp on the front.

More '70s patterns here:

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