Vintage Simplicity 

One Shoulder Dress 
Mary McFadden 
Miss Sz 14 
Uncut Factory Fold
9930

Simplicity 9930; ©1981; Mary McFadden for Jack Mulqueen Ltd - Misses' One-Shoulder Dress in Two Lengths and Tie Belt: Slim-fitting dress has self tie at shoulder, bias bound neck and armhole edges, skirt stitched to bodice at elasticized waistline, cascading ruffle front and corded tie belt. V. 1 is regular length. V. 2 is long length.