1960s 70s dead-stock velvet and corduroy maxi dress XS

Vintage 1960s 70s maxi dress by Sally Kay.
Empire line silhouette 
Made from 100% cotton - black patterned corduroy with black velvet panels 
Flared sleeves 
Zip to back and buttons to front chest
Label reads size 38
Would fit a modern 8 
Underarm 16 inches x1 side
Waist 15 inches x1 side 
Hips 20 inches x1 side 
Length 55 inches 
Stunning condition. It appears to be an unworn dead stock piece with no issues