This is a rare find, a vintage designer satin skirt by Mademoiselle G New York.

There is no size tag but based on actual measurements I believe it to be a Juniors or women's size xsmall or small.  Please go off actual measurements to ensure an accurate fit.

It is in great vintage condition - no flaws to note.  It fastens just fine, the skirt is just too small for my mannequin.

Actual measurements are :

Length across the waist area approx 12. 75" 

Across the hip area approx 25"

Length down the back approx 28"

Mannequin measures approx 35" Bust 27" Waist 36" Hips