this is a one of a kind classic. timeless piece. I picked it up on Newbury Street in Boston at an upstairs designer shop known for samples & unique finds! it wasn't exactly a steal, but oh what a day! I've never actually worn it because I acquired it just on the cusp of out growing the colour black! in any case it's a US size 4, the lines are exquisite, the fabric sexy, the zipper...yikes - so touchable!