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 

This item is sold from a vintage boutique in Buxton, ME.