Late 50s/early 60s nylon chiffon peignoir set by Shadowline. Nightie has lace cap sleeves embroidered yoke.  It's lined in tricot for opacity.  Robe has balloon half sleeves and a button front closure.  Label indicates a size small but due to the roomy fit this should fit a range of sizes.  Excellent condition, a few very small picks to the chiffon, not noticeable.
Nightie~
Bust: 40"
Length: 36"
Waist and hip are free
Robe~
Length: 37"
Sleeve: 16" from neckline
Bust: 46"

This item is sold from a vintage boutique in Los Angeles, Ca.